Who needs to build a G-force meter when you can simply buy one and let the statistical hoonage begin. The K.A.T. Matrix 3-Axis Accelerometer can measure acceleration, cornering, horsepower, g-forces, quarter-mile and 0-60 times — all using three-axis measurements. It mounts to the windshield and runs off AA batteries, and the LCD screen even includes backlighting so when the sun goes down the fun doesn't have to stop.
In all reality, this device could be very useful for benchmarking and performance-testing a vehicle, particularly given that the K.A.T. has a error compensation feature integrated. A bargain at $60. [Geeks.com]