a guy on ricekiller.com posted this ,and i thought any iphone owners here would enjoy this
Dynolicious is the first automotive performance meter available for the iPhone and iPod Touch. Dynolicious uses the hardware built-in to your iPhone to measure the performance characteristics of your vehicle. No external wires or equipment is necessary, simply slip the iPhone into a cradle or cupholder and go!
Some of the performance metrics Dynolicious can measure:
0-60 Acceleration
1/4 Mile Elapsed Time
Lateral G's
Horsepower
Unlike other accelerometer-based performance meters, Dynolicious uses the advanced data-handling and display capabilities of the iPhone to make the most of your performance testing. Dynolicious maintains a history of test runs, showing you averages and trends in your results. Dynolicious also allows you to enter modifications performed to your vehicle, and will instantly show before-and-after results to easily identify gains or losses.
http://www.dynolicious.com/index.html
