Microscopic Cars Square Off In Big Race

The Nanocar Race, which happened over the weekend at Le centre national de la recherché scientific in Toulouse, France, was billed as the "first-ever race of molecule-cars."

This car race involved years of training, feats of engineering, high-profile sponsorships, competitors from around the world and a racetrack made of gold. And it’s invisible to the naked eye.

(Image credit: CNRS)