Using only the Mesh, and the rudimentary 3D tools in Adobe Illustrator CS3, Gregory VanDenBerg has created a stunning vector illustration of a concept car. Check out this video displaying it’s final reveal. Wow:

There are certainly several 3d applications out there. Even though the limited range of dimensional tools don’t give you allot of power, you can see that in the right hands, it can do marvellous things.
Check out these vector cars.