Credit: Global Green Challenge

The sun is shining. Hot weather makes gas expand. Gas emissions contribute to global warming. Dontcha wish there was a better way, like cars that ran on solar power? There is, although they're experimental and in the development and gee-whiz stages. Who knows if solar cars will ever take off (maybe solar hybrids?). In the meantime, put on your sunglasses and check out these contenders.

Click here to read the full story at Treehugger.