Although this is called a car, the fact that it has four wheels is the only real resemblance to a car it is more like a toy as the size of it shows, 3.3 cm x 2.2 cm x 1.4 cm.
But saying that it is a toy is wrong too, because it has small parts it would be dangerous to let children play it. However this is a solar powered device which will begin to move when placed in strong light inside, or sunlight outside.
Priced at $19.99
Source [Think Geek]