liter SIDI E85 V6
(from General Motors
Press Release) HX CONCEPT PROVIDES VISION OF A RUGGED,
Designed by a trio
of young designers
with removable roof panels and modular rear roof assembly
fender flares and doors
Full-time 4WD with
front and rear locking differentials
inspired interior with functional, lightweight design elements
instruments for highway and off-road driving
3.6L SIDI V-6 E85
FlexFuel engine with six-speed automatic transmission
DETROIT With its
unmistakable HUMMER design and a compact, go-anywhere driving ethic,
the HUMMER HX concept challenges the hierarchy of the trail. HUMMER
displayed the nimble, reconfigurable off-roader at the 2008 North
American International Auto Show.
More compact than a HUMMER H3 81 inches (2,057 mm) wide, with a
103-inch wheelbase (2,616-mm) the HX concept is an open-air,
two-door off-road vehicle that packs the off-road acumen for which
HUMMER has become legendary, along with an easily convertible body
that acclimates to varied trail conditions, cargo needs or passenger
whims. Its design is based on the ideas developed by a trio of young
designers who are new to the HUMMER studio.
The HX is HUMMERs vision of an agile, trail-ready, open-air
vehicle that fits the lifestyles of everyone who needs or wants to
drive off road," said Martin Walsh, HUMMER general manager. "Of
course, it carries exceptional off-road capability and the
distinctive styling for which all HUMMERs are known.
The HX offers an open-air driving experience via a pair of removable
roof panels above the driver and front passenger, and a modular,
removable rear roof assembly. With the roof panels and roof assembly
removed, the HX is transformed into a true convertible.
Easy removal of the roof panels and rear-roof assembly enables quick
conversion from a closed vehicle to an open one. The HX also was
designed with several roof assemblies, allowing this versatile
vehicle to be configured as an SUT (with the roof assembly removed),
a stylish slant-back or a traditional, wagon-like design that offers
a bit more cargo space.
The HX was shown with a slant-back configuration, wearing a
desert-inspired matte olive paint scheme, at the North American
International Auto Show. Additional convertible features include:
Removable doors easily removable pins in the exposed hinges allow
the doors to be removed quickly an appreciated feature of many
Removable fender flares attached with quarter-turn quick-release
fasteners, the composite fender flares can be quickly removed for
additional trail/rock clearance, or if the flare is damaged during
The modular design of the roof and removable body panels mark an
evolution of HUMMERs design aesthetic, said Carl Zipfel, director
of design. These features demonstrate a deeper understanding of
enthusiast desires when it comes to off-road driving and the
slant-back design gives the HX a look all its own.
The design of the HX was
driven by input from three young designers who were new to GM and
the HUMMER design studio. As part of their initiation, they were
charged with developing concept drawings for a smaller, youthful
HUMMER and the HX is a direct result of their creativity. The HX
concept is based on one of the designers original illustrations,
but incorporates the best ideas and elements from the other designs.
HUMMER appeals to young people globally and served as a perfect
first assignment for our newest talent, said Ed Welburn, vice
president, Global Design. Todays graduates from top design schools
are ready to hit the ground running. The HUMMER design challenge
gave our newest designers an opportunity to sprint.
Inside and out, the HX carries a purposeful aesthetic that, from
initial sketches to finalized clay models, was refined in only six
This is the HUMMER design language stripped down to its essence,
said David Rojas, creative designer. The HX has an aggressive
appearance and great proportions, with beauty lying in its
On the exterior, the lightweight theme is evidenced in the
appearance of exposed, billet aluminum suspension components that
feature CNC-machined lightening relieves, as well as clean,
unadorned bodywork and minimal trim. The lightweight theme is taken
to its extreme when the roof panels, roof assembly, fender flares
and doors are removed.
Classic HUMMER design cues make the HX instantly recognizable,
including the round headlamps located in square housings, an upright
windshield profile, minimal overhangs, hood vents and prominent air
intakes. The air intakes are functional and feed a V-6 engine
beneath the hood, while the hood vents are active they articulate
to allow hot underhood air to escape.
And while the headlamps and grille are clearly HUMMER cues, theyve
evolved on the HX with a chopped circle motif. The grille slots
and headlamps, as well as elements on the interior, have the
appearance of circles or ovals that have been clipped at the top and
bottom, creating a unique appearance that speaks to the vehicles
The cut-off circles suggest larger, heavy-duty components that
were trimmed to fit the compact HX, said Rojas.
And while it is unadorned by extraneous embellishments, the HXs
exterior is nonetheless outfitted with features that speak to
HUMMERs legacy of technology and innovation, including HID
headlamps with focusing rings that adjust automatically when theyre
turned on much like the lens of an auto-focus SLR-type camera. LED
technology is used for the front turn signal lamps and taillamps.
Aeronautically inspired interior
seats to integrated, off-road-ready tools, the HUMMER HXs interior
has a beauty that lies in its purposeful intent. It was inspired by
the functional and lightweight elements found in aircraft.
Aeronautical parts are designed to be both lightweight and strong,
and that is the feeling exuded by the HXs cabin, said Stuart
Norris, interior design manager. There isnt superfluous trim or
decoration it is a purposeful design that conveys beauty through
Reinforcing the stripped-to-the-essence feel, the exteriors matte
olive color carries over onto the interiors largely sheet
metal-covered panels. The color is accented with pressed or extruded
aluminum components, such as the handles, switches and other
Furthering the aeronautical influence is the instrument panel, which
uses an exposed, extruded aluminum cross-vehicle beam as its
foundation. On the beam, the instrument cluster and other vital
controls are mounted; and it also features a unique, removal top
cover that provides significant storage capability.
The instrument panel is a styling element of the HX, and the
removal of the top cover reveals a secondary design that enhances
the vehicles core design ethic, said Norris. With the top cover
removed, the interior conveys even more of a basic essence and the
structure beneath the cover is beautiful to those who appreciate
finely crafted metal.
A rubberized floor and ballistic nylon-material covering on the
instrument panel and other interior components reinforces the
Seating and console details
Like aircraft seats, the
HXs seats are constructed on a lightweight framework with minimal
components that feature lightening holes and strength-enhancing
cross braces or triangulations. They are mounted on exposed,
aircraft-style tracks and trimmed with a weather-resistant neoprene
The HX seats four, with a pair of bucket-type seats in the second
row. The rear seats mimic the front seats design and can be removed
to generate more cargo room. All the seats feature a four-point,
racing-style safety harness.
The inner seat track on both front seats is located beneath the
outer edges of a prominent center console. The console offers
exceptional storage capability and houses a unique shifter that
mounts low and out of the way when the vehicle is parked also
hiding from sight the engine starter button. It has a spring-loaded
cover that pops up when the driver is ready to select a gear.
The console also houses a resting place for phones, MP3 player and
iPods or iPhones. In fact, there is no conventional radio in the HX,
only integrated speakers. Passengers plug in an iPod, or similar
device, to a USB connector to play music in the HX.
From the console to the cargo area behind the seats, there are
simply untold storage possibilities within the HX, said Norris.
Its like a four-wheel backpack thats already fitted with the
Gauges and tools
The cut-off circles
motif of the exterior is seen even more so on the HXs interior, as
the gauge cluster, instrument panel vents and even the steering
wheel carry the design element.
A three-element gauge cluster each of the three instrument pods
carries the cut-off circle design delivers crucial driver
information in either a highway or off-road mode. This conceptual
reconfigurable gauge layout uses LCD screens with multiple layouts,
including a navigation system. The nav system features GPS and
compass information; and is designed to upload trail information
before setting off on an excursion.
The center gauge pod houses a speedometer and tachometer, but
changes to a wheel angle indicator when the transmission is in the
low position. This off-road mode changeover from the highway mode
gives the driver information that is more pertinent to the driver
conditions. The trail view of a camera mounted in the rear-view
mirror can be displayed on the instrument panel, too.
The off-road mode features of the instrument panel comprise the
virtual tools of the HX, while others are mounted for physical use,
including a folding shovel, flashlight and first-aid kit. They all
carry the clipped circle design motif found throughout the
Ready for rocks, trails and more
With its compact
dimensions, almost no overhangs and grippy 35-inch tires, the HX is
ready for all terrains. Like all HUMMER production models, the HX
has sturdy, body-on-frame construction, onto which is mounted front
and rear independent suspensions.
The front suspension features an electronic-disconnecting stabilizer
bar for enhanced maneuverability when driving off road, and the rear
suspension is located with Computer Numerical Controlled (CNC)-machined,
billet trailing arms. Heavy-duty shocks with piggyback reservoirs
were custom-made for the HX by renowned racing shock manufacturer
Fox; one is mounted at each wheel position.
A full-time 4WD system pulls the HX over, through and around
off-road obstacles. It transfers torque to the front and rear axles,
each of which is equipped with a locking differential. The torque
meets the trail via custom 35-inch-tall off-road tires that are
mounted on a set of custom, bead-lock-style wheels that have a
two-tone appearance; dark-painted wheel centers complemented by
silver-anodized outer rims.
A complete underbody armor kit, including a front skid plate,
powetrain protection and more, protects the HX from wayward rocks
and other potentially damaging objects. A power-operated winch is
located in the front bumper, and the HX has recovery hooks mounted
on the front and rear bumpers, just in case its help is required for
wrangling others out of unfortunate off-road situations.
Motivation for the HX comes from an E85 FlexFuel 3.6L SIDI V-6 that
is backed by a six-speed automatic transmission. The transmission is
teamed with the 4WD system to offer exceptional low-speed traction
and crawling capability. Four-wheel-disc brakes provide confident