http://www.just-models.com/jm3.html This is a search engine I've found useful in coming across numerous car models. Also, there is http://www.planit3d.com, which has some of the models in which you are looking for in .3ds or MAX format... then http://www.3dm-mc.com has some vans, stuff of that sort in .3ds . www.3dbuzz.com, a lot of stuff in various formats, and theres a bunch more but it gets kinda sketchy when you venture into sites in Korean, Russian, and Japanese. And, if by any chance your looking for any military models (which would be a far cry from family sedans) hit me up. I just finished a set and I dont know how to put them online. hehe. I hope this all helped.

Cy