An accurate speedometer is important for everyday driving, but if it’s off by a couple mph, it won’t affect your day all that much. In the Great Race world, accuracy is the only way to win, and a standard cable driven analog speedometer is not up to the task. Timewise changed the game in 1999, and its Timewise 825 electronic speedometer has been a must-have item ever since. The precise measurement allows racers to have accurate speeds for all of the tricky instructions throughout the day, but the size and appearance does not take away from the classic looks of a pre-1972 car. Timewise returns as a sponsor of the 2014 Hemmings Motor News Great Race presented by Hagerty.