It’s Sunday afternoon. Thousands of fans cheer wildly as race cars fly by at speeds nearing 200 mph for 200 laps. They whiz down the pit road making pit stops, changing tires and refueling. Only, the tanks are not being filled with gas; they’re being filled with air. That scenario may sound futuristic, but it may not be long before we see air-powered engines take to the track. A group of mechanical engineering students have already started the journey down that road.