The biggest advantage to vending in a car wash business is to capture more profits.
For the full service car wash facility, traditional vending works by providing a snack and soda machine in the waiting area. You can also stock the machine with car wash products and accessories.
For the self-service car wash, the vending machines will likely sit outside. The AMS Outsider is the best fit for outdoor vending due to the environment (cooling and/or heating) and safety (difficult to break in). It is an all purpose vending machine.