Engineers in France have developed an air-powered car. Running on compressed air, the car has a top speed of 110 km/hr and a range of around 200 km, so it's not the most practical. Still, it produces zero pollutants and a tank of air is estimated to cost only $1.50, so the implications for the technology are great, especially if it can be refined. Let's see how long it takes Big Oil to get a whiff of this and squash it like a bug.