I believe the Super, at least in the 50s, was the slightly longer wheelbase version. You know how they sell the big cars with a longer version, like an Audi A8 or Audi A8L - the Super was basically the big car (Roadmaster?) with a longer wheelbase. Not sure if this was true into the 60s. I suspect the Special was the big car in a slightly higher trim (so, short wheel base of their big car, but with a higher trim).
Oh yeah...holy crap, it was so normal seeing @rloewy post photos of cars it didn't even occur to me! Welcome indeed!
Not sure what Camera in the back means.Hi, what's your set up? Do you have a camera in the back? Who's driving? Nice photos. How long have you been shooting Vehicles?