Nature has blessed the man with many things, the technological era became successful in utilizing the energy of our planet for the fulfillment of various needs.
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.