Electronic Tint (Variable Opacity) on 2013 Camaro

Old project I did in 2015. Back then it was very expensive and easy to damage. I'm sure it's much better these days, I might do it again. It was fun at stop lights.
Basically you can't see through it when there is no power running to the tint, and the more power you send via "dimmer switch" the clearer it gets.