Originally Posted by 05blacksrt6
that is not true at all. this isn't the 60's when cars speedos and driven by gear off the trans. there has been countless times when i have passed those cop things that show your speed and it was dead on every time at 25 mph or 75 mph didn't make a difference said the same thing in the xfire. ill try and take a pic next time i do it to show your guys (just hope i don't crashing trying to lol).
here is an interesting article for ya:
http://www.caranddriver.com/article....&page_number=1