Perhaps it''s not the most aerodynamically designed race car, but I bet you couldn''t beat the operating costs per mile. I don't think the mini solar racer has much for control either, and come to think of it, cornering abilities are just non-existent.
However, this little guy requires no assembly and runs on energy collected by the solar paneled roof which is converted into electricity.
The Mini Solar Racer is just 33x22x14mm and costs about £12. Apparently it will also run when close to a strong enough artificial light source.