Students at the university of Michigan have created a solar powered car named the Continuum which is capable of speeds up to 90MPH. To achieve that the car is built as slim and light as possible to reduce weight and drag. The solar system which generates power to the wheels has had an upgrade from previous similar models and it uses parabolic mirrors to concentrate the suns energy. A number of previous versions required the driver to lay down so the car could be as flat as possible. This version manages to allow the driver sit down, and still reach a fairly impressive top speed.
Via: TechChee