Most ingorant drivers, particularly those in North America where the standard of driver education is low take it as a sign of aggression and will be far more likely to pull some limp-**** agressive maneuver if you flash them. Sometimes they even slow down or put on the brakes as a result. Big rigs and buses and any other normal driver in the free world are really the only ones you can count on to know what you are doing.
Fixed it for you.
Please, ask me how I feel about North American drivers.
"We are all born ignorant, but one must work hard to remain stupid." ~Benjamin Franklin
2012 Kona Blue Mustang GT
Roush Phase 2 625HP Supercharger | Black OTT Stripe | 400A | 5.0L | 6MT | 3.55 | HID | SP | CP | BBP | EP | RVC
Mods: Forget it .... too much to list!