Nice Ride: The Hydrogen Gremlin
Link - yellow hatchback was the group's entry in the 1972 Urban Vehicle Design Competition, a one-time event that brought together 64 North American universities in a contest to see who could build the most innovative vehicle. Over the preceding two years, the UCLA team had painstakingly replaced the Gremlin's engine with a Boss 351 engine from Ford that had been modified to burn hydrogen instead of gasoline. In the rear of the hatchback, they installed tanks to hold the hydrogen gas under high pressure. Then, for safety, they created some of the world's first low-speed bumpers by packing popcorn into the front and back of the car.