The Doylestown Car Spa, located behind Aunt Judy's Diner on Atkinson Drive, is a self-serve car wash. Customers drive their vehicles through cleaning bays in the concrete hangar-style building at any time of the day. To start the process, customers must deposit $3 worth of quarters and purchase soap from the dispenser in front of the building. Large industrial vacuums are located at each bay and require $1 in quarters to start.