The world's smallest solar-powered racing car is smaller than a matchbook and, at just £11.99, it's actually affordable. With dimensions of 33×22x14 mm, it's also rather cute. The tiny electric car is basically a solar cell with a miniature electric motor and four wheels, able to run either on the power of the sun or on the power of a strong artificial light. The claim of it being a "race car" is a bit dubious, but we've already invented a way to race the cars. Buy two of them and see which one soaks up the sun best for the ultimate, eco-friendly drag race.

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