FOR MORE CAR VIDEOS & REVIEWS CHECK OUT: www.kbb.com Hummer Concept Car. Hummer’s latest concept is the product of three young designers given free reign to create an “entry-level-size” vehicle for the lineup. Among the HX’s more innovative features is a center gauge pod that converts from a speedometer/tachometer to a wheel angle indicator in off-road situations. The two-door HX Concept is powered by a 3.6-liter, E85-compatible V6 harnessed by a six-speed automatic and full-time four-wheel drive. Both doors are removable — as are the fender flares and overhead roof panels — and the back of the vehicle can be left open or covered by a choice of wagon-like or fastback-style caps. For more new car reviews, interviews and automotive news visit kbb.com today.