The last couple of weeks in England I found a neat show, Top Gear, where they analyze street legal cars. Plus they usually include some kind of stunt. For instance they were the first people ever to take a 'car' (Toyota Hilux pickup) to the North Pole. They beat the other TV host doing the same by dog sled.
But the relevant one was a small camper trailer with a motor, attached to a small blimp. It would make 12 knots, unfortunately there was a 13 knot headwind and he drifted over a busy airport unable to obey instructions from the control tower. This got the police called on them, and probably some paperwork from their FAA (but they usually get into some kind of trouble to make the show more interesting).
Thanks for sharing