I really like the cobblestone auto spa franchise. They are consistent and the pricing is good for what you get.
I used to wash my cars by hand (a few times a year). It would always take at least 30-45 min just to wash the outside. It was always a pain to dry the car fast enough in summer to not get water spots. Sure it was a hand wash, but I'm not driving a luxury car or fancy sports car.
Now, I just use cobblestone's drive through and I'm done in less than 5 min with little to no water spots!
$10-15 to wash and I'm gone driving on the road. It's a no brainer for me.