Has anyone tested the accuracy of our speedometers? (radar, one of those little "your speed" things cops set up, paced by another car, etc.) My mom feels that the speedometer in my maxima reads more than the actual speed and I'd agree with her based on what I've driven. Going 80 on the highway you don't even notice and it doesn't "feel fast" in general except when accelerating.

Keep in mind the other cars I've driven recently are a 97 Blazer and 92 Lumina APV Is the speedo optimistic or is there really that big a difference in driving feel between these cars? If it does misread, about how much is it off by?