Well then you should make a thread 'bout adding cars if you like that, And add the download link of the car pack aswell. It's not that hard to find just go to :
http://www.garrysmod.org.
With wheels you can make killing machines like ''ze terminator'' that's why I dislike them,And they lag the server a bit if many people use them. We mostly have 24 players,24x4 then you got 96 wheels in the server spinning around like crazies.