Furthermore there is a good demo about vehicle physic. It is an advanced demo that show the power of A7 physic engine! :-)

Game Massive Creek:
http://www.massivecreek.com/home/
http://www.youtube.com/user/massivecreek
http://twitter.com/#!/massivecreek
http://www.facebook.com/pages/Massiv...68000596582093