Richie Presto
Spectator
http://www.engadget.com/2008/09/03/titans-air-jack-lifts-your-car-with-hot-air-cant-be-used-for/
YouTube - Titan Air Jack
The only thing worse than getting a punctured tire is trying to use a flimsy scissor jack to change it. Break down on a dirt or snow-covered road and you probably have as good a shot at losing your hand as you do fixing a flat. Not so with the Titan, which may look like an exhaust-powered whoopee cushion, but can actually haul cars (even lifted rigs) up into the air on nearly any surface. Just run a hose to the exhaust of a running car, and the $120 (and up) balloon will gently raise the vehicle aloft -- and by "gently" we mean "really, really slowly." It's probably a little faster than calling AAA, but not as easy as Superjack's remote-controlled kit for lazies. If you have the patience, check out the vid after the break for six minutes of tire-changing action.
YouTube - Titan Air Jack