Vending machines selling products such as fragrance, window cleaner, Armor All ® , and towels are another way to increase revenue in your self-service car wash. For the innovative owner, electronic vending islands are now available offering the latest technology for today's car wash. This offers the customer one point of payment for up to 10 different products. Through electronic vending, the customer can now pay with multiple types of coins including the Golden Dollar, or if the Swipe-N-Clean ® is installed, vending products can be purchased with a credit card.