Would you purchase an "active" rear spoiler?

H2O_Doc

1) Stick hand* out window, palm down.
2) To generate downforce for extreme speeds, rotate hand clockwise.
3) For emergency braking, rotate hand counter clockwise.
4) To leap debris, flap madly.
5) When passing MILFS, rotate palm 90° counter clockwise, extend thumb, honk, then wink. If velocity < 45 mph, yell "hey baby."
6) Send 50% of the money you saved to H2O_Doc.

For best results, use hand nearest driver's window (left hand for 'Muricans and right hand for Crumpet Monkeys and Aussies). Said foreigners might need to invert rotation directions.