Just on concept alone, solar power is a pretty easy sell. Who doesn't want to harness the power of the sun like an Egyptian god or the Kool-Aid Thirsties? Heck, just stick Superman on whatever box solar panels come in and you're good to go. It's hard to screw up something that could run your car for free, which makes what we're about to show you that much more incredible.
AP / Solar Impulse
Gasoline doesn't look so bad now, does it?
Everyone meet the Solar Impulse HB-SIA, the first solar-powered airplane to fly overnight without any need for fuel. On May 1, its sister plane, the HB-SIB, will make aviation history by traveling from San Francisco to New York City, completely on Ra's dime, in an effort to promote the merits of solar energy.
The only problem is that it's terrible.
Justin Sullivan / Getty
The sun god's new chariot doesn't boast enough elbow room to seat a 9-year-old.