Well, look at everybody over here now!
Something everyone should remember: If you are looking at a Google Map of the S. Town Center area, it did not look like that in 2007. As I stated over on the Steven thread, there was some construction going on. The exit/entrance ramps to Town Center were being built, that whole area was nothing but a construction zone at that time. Fairy1 lives here as well. She may be able to offer more insight into the situation of that area at the time. It just seems to me that if Trevor started walking SW on Town Center from 3800 S. Town Center he was walking right into a construction zone.
fe4 - I'm sure that leg of the 215 was completed by 2007. Check this out:
http://en.wikipedia.org/wiki/Las_Vegas_Beltway