I agree with the point of having decent transit systems. Chicago-St. Louis would have a passable claim there as well (Chicago's system is great; St. Louis at least has something there). Miami-Orlando also has a workable claim (especially with the string of streetcar lines going in along the route). The real saving graces with Vegas are (A) bad traffic on I-15 and (B) the fact that either the casinos would probably be more than happy to do something shuttle-wise or, if they balked, someone could easily set up a shuttle to at least the casinos on the Strip.