I am only going to base this review on this actual trip to Vegas. I wished I had known this was the Mayweather fight weekend before I had left.
When I arrived to car rental there were only 3 cars left as of that Thursday (2 days before fight). My choices where two mini vans or a SUV by Jeep. Went with the SUV. You could tell they did a quick wipe down and put it back out. It wasn't very clean, old school, and I am pretty sure tires needed to be changed because it kept acting like I was peeling the wheels when I would get ready to leave any location I was at. Very annoying and took forever to pick up speed.
Per comment received it was National Rent A Car.