CVT made out of LEGO

Now this is very cool, a continuously variable transmission made entirely out of LEGO.
This CVT enables a variation of the speed (and the torque) from 40rpm to 200 (1/5, 1,1) with constant speed for the motor (200rpm). This device is on the way to be included in a lego car. The two mechanical tachometers show respectively the speed of the motor and the speed of the output.

awesome