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The General Motors Ultralite was a 1992 low emission vehicle concept car intended to demonstrate the benefits of advanced materials and low fuel consumption. The carbon fiber shell was fabricated by Scaled Composites and it amounted to only 425 pounds. The total weight was 1,400 pounds. Its 3 cylinder 1.5 l two stroke engine could produce 111hp, which made a speed of 135 mph possible. The goal was to make a four passenger show car capable of 100 mpg. It was rated at 88 mpg by the EPA.
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