An all-in-one track application including G-force, lap timer, and 0-60 timer(for iPhone 3G(S) users only). Available in the app store for $12.
After you purchase, download, install, and run the app, you are welcomed by a warning message alerting it is designed for use on private race tracks or drag strips. This doesn't mean you can have a little fun right?
After you say, "okay I wont drive like a maniac on the street," you're greeted by the home screen of the application which allows you to choose your car. 
Once you choose your car, you are shown the specs you input, such as weight, frontal surface area, and drag coeff.
You can then conduct power, accleration, and speed tests.
Using the accelerometer, you can conduct g-force tests.
Even a lap timer.
And finally your settings, so you can change all your readings from the default communist metric to standard.
More detailed review to come once I can use it once or twice.
I'm Romanian dammit!
