Most dealerships detail the car and provide a full tank of fuel. You will have one more chance to inspect the car before you take possession of it. Make sure you walk around the car and look for scratches in the paint and wheels or dents and dings on the body. If you are paying for floor mats make sure they are included. If anything is missing, or if any work needs to be done, ask for a "Due Bill" that puts it in writing. You will then be able to come back and get the work done later.

As you drive away inhaling that new-car smell, there is only one more thing to be done: enjoy your new car.