They've finished the exit at the Valley Auto Mall and it's really easy to get off right in the center of the activity. Most car companies have dealerships right here and it is still growing. It seems that a lot of places are run by Findlay. The Ford Dealership has a nice restaurant that looks like a 50s coffee shop -- called Mustang Sally's and is a great place to wait for your car if it is being serviced. You don't have to be driving a Ford to eat there, but if you are having your car serviced there, you can have a discount. If you happen to buy a new car and can't get a good quote on your old you, Carmax is just down the street.
PROS: You don't need to go anywhere else to shop for cars.