Please excuse my ignorance but what exactly are the definitions of different car wash business models; such as exterior express and flex-serve, etc.?
Carwash can be divided into three general categories; self-service, in-bay, and conveyor.
Self-service consists of wands or spray-bays and
vending machines (vacuums, shampoo, fragrance, merchandise). About one half of self-service has in-bay on property.
In-bays are usually considered a separate product class from self-service because the majority of units were located at petroleum sites. There are also a number of free-standing single and dual in-bay private investor sites in certain markets.
Conveyor business models can be described in terms of differences in process layout.
Traditional exterior-only features greeters, customers stay in car during wash, vehicles usually towel dried at exit end, and vacuums are
coin-operated. Some exterior-only have couple of wands or small detail shop.
Traditional full-service feature greeters, customers get out of vehicle, cashier in lobby processes sales and vehicles are towel dried and made ready for customer. Most full-service offer express detail and some will have separate detail shop.
Express exterior features self-pay terminals, customers stay in car during wash, most express do not towel dry vehicles, and free vacuums are canister or centrally operated. Most express do not have
vending, bathrooms, or assisted-services.
Flex-serve features greeters or self-pay terminals, customers stay in car during wash, most flex do not towel dry vehicles, some will have a
coin-operated vacuum island, and there is separate area (canopied or building) where interior cleaning and express detail is offered. So, there is also lobby area with bathroom and amenities.
Hope this helps.