As people have pointed out, Dollar had the longest lines of any rental car place at the Rental Car Center. Luckily I got to the counter in about 15 minutes. The guy who took care of my reservation at the counter, Michael, couldn't have been nicer, and was an extremely cool dude. My problem began when I got my car. I upgraded to a Ford Mustang Convertible. When I got downstairs the guys pointed me towards a corner of Dollar's lot and said "take any Mustang parked over there." When I got over to the Mustangs, there were three sitting around. Two of them were dirty and hadn't been washed in a while. The third was extremely clean and looked new. Little did I know at the time, but this "new" looking car had 65,000 miles on it!!! Seriously? And worst of all, it had a sticky parking break. I nearly got stuck at Red Rocks Canyon when the parking break wouldn't disengage for almost thirty minutes. I finally got it to click and disengage and didn't use the parking break for the rest of the trip. Bottom line, Dollar rents out old cars with maintenance issues. Avoid them at all costs.