This is EASY!
One pic is colour, the other is Black'n'white, HAHAHAHAHAHAHA
Somehow i'd be airbrushing the Grannie out of the backglass though, kinda ruins the scene
I was waiting to see which member was going to say one BW ands ones colour and its Marty
The BW one I know its hard to see but is there an old lady there ?
Also the girl on his right side her figure is much better IMO.
The BW shot Hugh Hefner has a full grey coat on with nothing on underneath and the girl on his right is doing