Just to continue the conversation I shot a vehicle today 1/28/15 and timed it. Went at a normal speed nothing different. I also timed the editing. I mainly wanted to do this as an example to just ad to the database we have here. My camera setup is about 2k with the lens purchased used as well as the body itself. The 10 years of shooting cars and working under one of the leaders in this industry was what helped the most.
See the pictures attached, I feel rival and do the job just as good as any booth setup. It is a simple staging spot we use and I did something different for this shoot. The difference is I used my $150.00 coolpix point'n'shoot for this car. (I use this camera in heavy rain). No full frame camera, no fast lenses, no flash.
I guess what I am trying to illustrate with this is awesome gear and a photo booth will not just automatically give you great results in my opinion. Just training anyone at the dealer with a good setup does not equal a great setup. Now I do not try and get the perfect photo every shot, this shoot (25 photos in total) took me 5 minutes exactly from putting the car in park to putting in in reverse to move it. it also took me 2.5 minutes to edit the full 25 photo set. So that's lets say 8 minutes in total.