I doubt that anyone is just going to give you models for a mod. Cars aren't exactly hard to model, I mean I did this
http://img.photobucket.com/albums/v224/ ... /shot1.jpg
http://img.photobucket.com/albums/v224/ ... /shot2.jpg
Awhile back. First car model too. It's basically just like doing any other inorganic model. I'm assuming that the people on your team do know how to do inorganic models, right?