The EnerGreen Air is a lightweight, single cylinder Compressed Air Engine, displacing 445cc. At 150 PSI, it makes from 3 to 10 horsepower at 2000-5000 RPM. To put it into perspective, that is around 22.7 hp per liter, which is comparable to most industrial engines or small lawn mower engines. It could be used to power a lightweight car, but it would need at least a 500 L air tank for a reasonable run time. This prototype is very flexible when it comes to optimization though, you could run it with 35 PSI and a 50 liter tank, it could run for 3 minutes at 0.15 HP, but despite sounding very inefficient, remember that this is running off of a renewable, clean, energy source: AIR! And, with enough evolution, this concept could revolutionize the world, AND the hypercar industry. Which is why EnerGreen is asking for funding