I've done a few of these...
Here's my Mazda Mx6
Three angle
3/4 angle
Here's a 1g Ford Probe that I made from scratch by modifying a 240sx template.
3 angle
3/4 angle
I made the mazda3 hatch on the bottom from a mazda6 sedan picture on the top. I also converted the mazda6 sedan to the mazda3 sedan in the middle.