Technology 7 - Solar Powered Car

I have found three Youtube videos about solar powered cars worthy of watching. They don't use any fossil fuel and don't emit any carbon-dioxide. There is also no need to stop the car to refuel as it constantly does so on the move.
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This one is most impressive. He constructed the whole car from scratch!
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This one is a little more odd ball, but with the right investors, it can be a fun car to watch.
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This one, a golf cart fitted with solar panels, is already commercially available for US$7,000.
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All three cars are small cars, since bigger cars will need more power. Current solar cell efficiency is only 10%. Prototypes are now at 42% efficiency. When they come to production, we may see bigger solar cars on the road.