I like the car washes with the cloths better than the "hands free" ones. They're more fun to go thru and I feel like they clean better than just a high power spray of water.
This car wash place is great. $7 for the cheapest wash.
You pull up to a machine to pay and a staff member comes out to help you with your transaction. They also give you a wet wipe and microfiber cloth to wipe down the interior of your car. There's another staff member that goes over the outside of your car with a wet brush. You drive in, put your car in neutral, and watch the pretty colors and lights.
Once you're out, there are free vacuums to get all the crumbs and dirt inside. Now let's just hope it doesn't rain again because we all know how bipolar Vegas weather can be!