Is that Pontiac was still a brand

You're right!  Also, 1993's "Demolition Man" (in the year 2032) also predicted Oldsmobile would still be around.

 

Chronologically, the BTTF series had three different dealerships featured in the same location:

 

BTTF1: Toyota (1985), Studebaker (1955)

BTTF2: Pontiac (2015), N/A (alternate 1985), Studebaker (1985)

BTTF3: Primarily Wild West-based movie (1885), but I believe what would have been related was a horse stable; though not shown, Toyota (1985) as Marty drove his black Toyota pickup at the end of the movie

All fun movies though!

Course Demolition man also showed us that video calling people would be in the future and it his here now.

And now another BTTF2 reality: http://yahoo.thepostgame.com/blog/style-points/201501/nike-confirms-plans-release-famed-back-future-shoe-2015

That Rocks that they have the shoes out in 2015 just as the Movie stated.