What might NOT be myth is that these guys (one the son of a scrapyard/army surplus owner) found a live jato bottle accidentally included in a shipment of army surplus, lived out in the desert where there were old mine railroads, and decided to put the JATO bottle on a mine cart to build a rocket sled, and THEN decided to put a car body on top of the mine cart, for fun.
No lighting it off while driving, no going airborne, a lot of detailed engineering on how they mated the JATO bottle and the old car body to the existing mine cart.
The guy was amazed as anyone that their little trick ended up with the urban legend it sprang into... |