As you can tell I'm in Vegas where most of you come at least once a year. Did you ever think of why most people here use the taxis instead of renting a car. If you've driven here you'll understand. If not then think of all the other cities mentioned and then throw all of those people into one city.

As someone else mentioned go to a foreign country. I lived and drove in the Philippines for a couple of months (and not in Manila). Image all of the cars that are on the roads here with road only two lanes wide. Now picture no speed limits, no stop signs, no stop lights, and then look at the paths in the grass at the side of the road (on the right or left) where you pass the slower traffic. Remarkably there are not many cars that are dented.