The Air Jack , by using your car’s exhaust gas, is either a cool attempt -- or maybe a hilarious one -- at paradigm-shifting the lowly car jack. Very unstable for a jack (the car will almost turn turtle) but it will do: it can be used to jack up anything on uneven terrain.

I’d get one and motorists will slow down on my car being jacked up. Nah. I’ll use it to rescue earthquake victims pinned down under concrete, right? Or as a flotation device/lifesaver (quick, find some exhaust gas!). For a price of $129.95, it can be mistaken for an expensive exercise ball. [Picture from ajprindle.com]

Verdict: Otherwise, a dumb way to recycle exhaust gas (you’re not recycling gas if you deliberately inflate the jack with gas). I don’t know what the girl is smiling about (maybe she’s laughing).