The car wash is below the grocery store and gas station in Cartown. Putt-Putt will need to get a car wash in order to be ready for the parade. To initiate the car wash, Putt-Putt will need to use the shower, presoakers, vertical brush, and dryer (in that order) to complete the car wash.
The car wash looks different, as this is how it goes from left-to-right: vacuum, water, bubbles on two brushes, some kind of tickly green-cloth mop thingy, and a wax-shower thing with a brush.
When choosing the vacuum, it will always vacuum up all the trash, and Pep will end up about to get sucked up (but fortunately holds on for dear life, and does not get sucked in) whether or not it sucks up any bubbles all over him first.
The water shower will get him wet, and one drop will get into his open eye.
A robotic hand squirts bubbly soap onto the two brushes, and they are rubbed all over him.
The wax showers will always pour liquid on him whether there are bubbles on him or not. If there are, the bubbles come off. Then a rotating brush spins all over him, and he shines.