Oh I had one say something like that another time and he wasn't too happy when I completely shot him down asking things like "Do you have a laser range finder on your dash to confirm that I was indeed increasing the distance between your car and mine?" or "Have you thought about the fact that it only makes logical sense that you would have to increase your speed above mine in order to catch up to me? Clearly whatever speed you chose to do is not related to the speed I was traveling at the same time." If you were quick with math, you could easily throw them off with a few questions lol