If you are going to bother bringing the toad, I'd certainly think you'd want to use it in Vegas.

However, consider the pace of your trip - where you really aren't going to be spending more than a day at any one place - why are you even bothering to tow a car at all? It really seems like any advantage of having the toad would be pretty much wiped out by the extra time it is going to take to hook/unhook the car and the hassle of towing in addition to driving a supersized vehicle.