Automobile adapted by students Roger Billings and Dennis Larsen to run on hydrogen, May 18, 1972

On May 18, 1972, BYU students Roger Billings (wearing tie) and Dennis Larsen (right) adapted an automobile to run on hydrogen and demonstrated it on a campus parking lot. That year they won the clean-air contest of the National Urban Vehicle Design Competition in Detroit, far exceeding federal standards.

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