First of all CONGRATULATIONS on having a great idea, as a car fan and since Ryan started posting some nice shots, if you are interested on car photoshoot I think you can start by talking to him not because of cars but because of photography skills.
I suggest when you taking shots, you could start by the "worm's eye" point, then the rear rim , the rear of the car while showing part of the side of the car, etc..
Try picking the camera, take different shots and see which transmit what you feel like its a great shot or not.
Not sure if I made myself clear, since I haven't got the skills not the camera btw...
Good luck with that.