The Mini Solar Car is a tiny car which has a motor in it allowing it to work when under sunlight or bright artificial light. It measures just 33 x 22 x 14 mm and basically goes when the sun comes out. Its main use is to demonstrate what solar power can do to students. It is a shame that it isnt RC as that could be quite cool using a small solar powered RC car that you didnt have to charge every 5 minutes.
It costs just 9.99 GBP (4 GBP for delivery) and is available from Selectsolar.