Take a look at tht Conceptual Solar Powered BMW!

This Conceptual solar powered bmw looks like a fish!!!I guess they will make the solar panels adjust twhen you are driving so than it becomes aerodynamic.I am sure it requires a breakthrough on the solar  panels efficiency technology as well.

 

 

It Looks impossible to wash. If the scales can lay down when the car is driving/being washed, the concept could work, but not using solar power as the sole energy source.

 

Shine Solar