This thing is tight was messing around with it and got a stock audi TT to go 500mph + but it is just too unstable and goes on two wheels and then spins for what seems like forever.
well I think it a good tool for messing around offline and plz ppl don't use this online to cheat it will take all the fun out of the game. Oh yeah almost forgot I kept messing around with it and messed up my saves lol. So make sure to back up the saved game b4 messing around.
what you can do is after you edit your cars save the game with a car thats not edited as your primary garage car or the one that is selected to drive that way your saves wont be screwed cuz when u reload it that car wont be modified so you'll be fine
The application is very simple and easy to use,all you do is load cars.ca2 then edit it how u want after every edit click the save button but do not make a new ca2 as yet,then after you have completed all your mods then you click the create a modded ca2 button then u load it onto your xbox and your set to go
hope this helps you.