I just found this on the Spirit forums... I want to download that but the link don't work... It seens that site has been deleted a long ago... But he explains how to make the car but I can't understand... Can someone tell me WTF he did to make a drivable car on Spirit???...
http://www.chatbear.com/board.plm?v=flatold&go=Change&a=viewthread&b=839&id=695961&t=8%2C1082876348%2C18972&change=view