Solar energy is one form of renewable resources in which the heat waves coming from the sun are utilized primarily for producing electricity and for other purposes.
Conspiracy theorists who believe that a machine that works on its own without any external force is not only possible but they blame energy companies are suppressing free energy devices. Well, we are not sure of aliens existence or did they visited earth or not, but surely we can shut their mouths by providing few basic laws of physics.
The only Drawback of solar power car is, it requires sunlight continuously in order to move. But we live in a century where everything is run by coal, gas and other precious minerals.
The major pillars for renewable energy are hydro, wind and solar, although most renewable energy comes either directly or indirectly from the sun, the importance of renewable energy in the future of a society or nation cannot be overemphasized.