Stan Mizer was a scientist who developed a car that ran on water instead of gasoline. He decided to hide his invention eventually, probably out of both wisdom and fear. It is suggested by Melvin Frohike that he was threatened by the oil companies about his invention. However, his daughter told them that he realized it would create an even worse industrial boom than the original car brought about rather than a hopeful utopian world.
In any case, he had a decoy hidden by his friend, J.T. Guthrie, in a missile silo while the real vehicle was hidden on the Guthrie family farm.