I like what you have going here so far. demo's not bad.
there are 3d modelrs on the board here. me being one of them with one of the longest running gta mods around. but I have some ideas for some more original cars. so if you ever need a mesh builder for your future ideas I am willing to help. thought I know next to nothing about unity modeling so unless we can cross work with 3d max maybe I cannot help. but hey if you need meshes I can whip some up.
Thanks for the offer, I want to make the models myself tho Keeping this project small and simple
I'm modelling the cars with Blender, it's pretty awesome nowadays and more user-friendly so people can actually use it.