Just saw this over at dvice.com.
"Want to create a bike that runs on thin air? Talk to this guy, former sheepherder and current rocket scientist/inventor Jem Stansfield, who took a couple of air canisters normally used by firefighters for their breathing apparatuses, and lashed them onto a Puch moped. The result? An air-powered bike that spews out cleaner air than it takes in.
The two compressed air cylinders drive a pair of rotary air engines (similar to the one powering the Air Car) that propel the bike to a top speed of 18mph, but it’ll only go about 7 miles until more air is needed. Just a quick fill-up at his local dive shop, he’s ready to go again. Might not be a bad idea if you live close to work. Now it’s time for the oil companies to put a stop to these shenanigans."-Charlie White @ dvice.com
We want one. Here's to hoping he puts the plans online.