1992 GM Ultralite

Developed jointly by General Motors Design Center and Research Laboratories, the Ultralite concept was created to be the ultimate test-platform for fuel economy. The four-passenger vehicle features a carbon fibre monocoque structure that combines high-strength with exceptional weight savings. Due to efficient packaging techniques and use of lightweight materials throughout, Ultralite’s curb weight is a mere 1,400 pounds. The concept also incorporates low rolling resistance tires and a 1.5-litre, three cylinder, two-stroke engine that delivers 111 bhp at 4500 rpm. Fuel economy is EPA rated at 80 mpg (highway).

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The federal government was convinced that 100 mpg cars could easily be built, if only the domestic auto manufacturers would make the effort. This was the goal of General Motors in 1992. The result was the Ultralite, a 1,400-pound four-passenger sedan that GM claimed could attain 100 miles per gallon while at a constant 50 mph speed. Powered by a rear-mounted GM 1.5-liter three-cylinder two-stroke engine, the Ultralite achieved an 80 mph figure in the EPA's highway test cycle, and could also accelerate from 0-60 miles per hour in 7.8 seconds. GM claimed the top speed was 135 mph. All components of the body contributed to economy and efficiency. Both the body and structure were carbon-fiber. Side doors lifted upwards in a gull-wing style for easy access to the front and rear seats. The large window area was intended to give the driver excellent all-round visibility. High-intensity fiber-optic headlights and LED taillights were joined by auxiliary fluorescent tube lights.

Concept Car Central