Basically you get 4/5 lives on a handheld unit, badically this means you can put maps on 5 different cars, and can change the maps on said cars how ever many times you want. But if you want more lives you said it back and they reset it for you....which is about. £200!

Then again, the unit is like £3-400 for a handheld, so doing it between a group would be best!