I don't know if you're going to be slicing through Kansas or not, but usually here, its OK to go 5 mph over, but 10 mph is risking it.
Also, since there is a LOT of drug traffic along our interstates, the highway patrol is really sensitive to out of state cars driven by young males, and they tend to racially profile. If your a young male Hispanic driving something flashy, be very careful. If you're an older couple driving a Lincoln Towncar, you can probably speed to your heart's content. Our cops make an unbelievable amount of drug arrests on the Interstates, and more often than not, the car's occupants are Mexican.
