2. make sure that there is something to go on. Other words use common sense. The car in question must be at 1/4 of the picture, and the main thing in it... So that means you can't use far away pictures. At least show a logo. If not, then you will be DQ'd and someone else will step in. So no far away pics that you cannot recognize the vehicle.
You also can't ask for the manufacturer. Do you have another picture of it?