The Mutiiple City Theory
NOTE: THIS IS NOT FACT, NOR AM I TRYING TO START A RUMOR. THIS IS STRICTLY A THEORY, OR AN IDEA THAT I THOUGHT UP.
Alright, first I'm basing this off the end of the trailer. The main character's speech, it sounds like he's Russian. The way he says "Perhaps here, things will be different.", makes it sound like he's talking about the country in general, as compared to Russia, or his home country.
My theory is, I really doubt for one Rockstar would stick to ONE city, and get rid of the countryside despite how popular it was. I could be wrong, but I don't even think NYC or Manhattan has a lot of country side. What I am expecting Rockstar to do, is release a few more trailers. This first one kinda showed off Liberty City, in all it's revamped and beautiful glory. What if the next trailer shows off a completely different city?
Another hint towards this theory is the posters that say FlyUSA, which kinda hints that there is an airport, and possibly another way to get between cities.
Discuss, add, or debate against the theory, but don't hold me to it.