The opening part in Last of Us felt eerily close when getting off the highway, but as soon as you venture away from the highway exit ramp and onto another street the illusion is lost completely.
The opening part of the game or the opening part of being in Salt Lake? You're in Texas at the very beginning, then Boston then you hit somewhere in the west...I haven't gotten to the SLC portion but I've heard it's kind of cool looking and there's a lot of attention to detail.
The opening part of being in Salt Lake, which is later in the game.
Now that I go back and look at screenshots of it though, it doesn't look remotely accurate, the i-15 exit they take doesn't look right, not to mention is on the complete opposite side of the city from where the the real version of the fake location you're going to would be. They do a decent job of the skyline though; and they nail the texture on the cop cars for whatever that's worth.