Air ApparentInspired by air-powered car concepts in Europe, Dalhousie mechanical engineering students David Alderson, Scott Allan, David Langille, Michael Roy and Dave Spencer decided to develop a compressed air engine of their own for a year-long research project. They recently unveiled their air-powered go-kart, with the vehicle performing comparatively to electric-powered cars. Dalhousie engineering student, David Alderson test drives an air-powered go cart Newswise — 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,...