There are many vehicles in the forum. I pulled a couple of threads for you to help you on your seach.
I usually make this suggestion for anybody askming without searching so here is my typical speech "smiling"
You may want to use the common keywords like car, van, bug, vehicle, jeep, auto, bus, desiel, automobile, transportation, etc etc
The search feature is on the bottom of the forum just make sure your in the forum area you want to make your search in.
Here are the links I promised...
Blue Van - Poster: GPS
http://forum.thegamecreators.com/?m=forum_view&t=76209&b=24
Jeep - Poster: jordmans
http://forum.thegamecreators.com/?m=forum_view&t=76082&b=24
-----------------Edit-----------------
An after thought here... Thee is a sticky on the top of the forum
http://forum.thegamecreators.com/?m=forum_view&t=82333&b=24
I am not sure if there is vehicles there but a good chance thee is.
Bullshock took alot of time to post all the downloadable model & segment links on this forum
Have you downloaded your CLiPs today.