No, once they start moving in a circle they light up. We were playing with one today at work. It's annoying and they can set off your balancing on your tires.
'95 Contour GL, zetec mtx, drop in K&N, exhaust res removed, 4 10" Kenwoods powered by 1000W Visonik amp, 4 5"x7"/6"x8" Visoniks
Subframe Connectors, H&R's, Koni's, Rage 5.0 17's, Pole Position Tires Removed Resonator,KKM Intake,ShoShop Y-Pipe 3 liter to be built by Terry Haines or BNoon one of these days...