Stephen Beatty was looking through some old papers not long ago and found a report prepared for then-prime minister Joe Clark on Canada’s hydrogen-powered future. “It talked of the hydrogen economy being only 25 years away,” Toyota Canada’s vice-president says. “That was in 1979, when the hydrogen economy was always 25 years away. It’s different now. Cars are rolling out in the U.S. and Japan and Europe, and the technology is available to us.” He’s…