There were some folks in Cuba that wanted to get to the U.S. so they took a 51 Chevy flatbed truck, mounted it on barrels (with tires on) and hooked a propellor to the driveshaft and were sailing along at 8mph until the Coast Guard caught them, sent them back to Cuba, and sank the 51 to the bottom of the ocean. Story and picture here.
67 Beetle Pictures at