The photo shoot was in London, England. A guy I know had his Charger there as well. He picked up a few scratches too but what he was paid took the sting out and then some.
The girls were on the cars for sure but I am not sure if they were all on at the same time. So you could be looking at multiple images making up that one image. There is NO image EVER taken on a fashion shoot that is not photo shopped to a large degree. The women and clothes/makeup have a LOT of work done to them every time. The car and surrounding area would have been "digitally cleaned" as well. So yes, it will be photo shopped. But the girls were there on the car.