Eco-Drive app for Iphone
 

Eco-Drive this is an application which teaches you how to drive a car gently and economically.
You only need to install your iphone in the gps handle and run this application. Try to drive a car so gently that the virtual water in the virtual glass does not spill out.
itunes.apple.com/pl/app/eco-drive/id434135008?mt=8