BrightSource Energy, Inc. A solar power plant in the Mojave Desert.A rooftop dotted with solar panels isn’t unusual anymore. And many recall calculators and watches powered by sun rays. But how about a bike path that puts in overtime as a solar-power system, or a plane that ambitious pilots want to fly around the world using nothing but solar power? Here are some of the most unexpected places you can find solar power these days. Solar bike path Solar-powered plane Solar trash cans Solar boat Solar tent Solar carports marketwatch