"Accused speeder to cops: My GPS proves your radar gun is wrong"

While many GPS systems don't log travel details extensively enough to be used as a defense against a moving violation, Malone's car was outfitted with a device that could do just that. According to [stepfather Roger] Rude, all recorded plots on Malone's route show him to be driving under the speed limit. At the same time, Rude says, GPS-systems are clearly more reliable than radar systems, which, while good, are "not an infallible tool" and are subject to human error.