Not ready for prime time
A good concept, poorly executed. The App is a real power hog, best used with a car power adapter. The app will record any sudden movement, such as picking up your iPhone to answer a call, or hitting the "stop driving" button, as water drops, throwing off your stats. It might be a good training tool if you drive the same route every day, but the comparison is not sophisticated enough to compare different routes that are traveled at different speeds and with different numbers of stops.
StrongDreams about
A glass of water