Scientists have created what they claim is the world's smallest car - the size of
which is a single molecule, making it invisible to the human eye.

A team at the University of Groningen in the Netherlands says the only real ways that it
has any visual similarities to a car is that it has four wheels and a barebones internal framework.

The car is powered by electrical pulses that respond to millivolts of energy. For every halfturn of its wheels,
the car needed another jolt of energy. Ev...


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