Personally I'd:
- try to stick to the factory images but I do not know if there could be some copyright issue
- have all pics with the same angle and same size (even when opened, so resizing them all upfront)
- no more than two pics for each serie. 3/4 front and 3/4 rear
- pics with specs as stock as possible (e.g. wheels)
If then you want to be covered of a violet aeross, those are not missing.
Interestingly it seems they specifically call out types of images, so works in the public domain released from copyright, wikipedia compatible license images, or direct from the owner with permission.. I am guessing it will be easier to use photos from here which have the owners permission rather than risking copyright and trying to figure out what is what.
I will have a scan and see what I can find, although I might not have much time today!
