It's pretty well established that car speedometers are mildly inaccurate. However, if you're wondering whether GPS is any better, here's what to know.
Fast Lane Only on MSN
Your speedometer is lying, but is GPS accuracy actually any better?
Modern cars surround drivers with digital certainty, yet one of the most basic numbers on the dashboard is quietly biased in ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results