I just got the May Car & Driver. They have a test of Performance Meters.
Most, " use accelerometers and an electronic timer to measure performance. An accelerometer is a device about the size of a wristwatcvh battery that produces an electical signal that changes under aceloratrion. Simply put, if you can monitor aceleration in relation to time, you can calculate speed and distance traveled".
These range in price from $90-$960.
Car and Driver uses an $11,800 VBOX GPS based system for their testing.
Who's got a hot rod buddy to share one with?
