A flex model car wash is a combination of both the full service model and the express exterior model. It operates the same as an express exterior, except that it offers detail services. The flex service customer still drives their own vehicle onto the automated conveyor/belt, through the tunnel wash process. However, once they exit the tunnel, and depending on their service selections, they can either drive to the free vacuums to vacuum the interior themselves, or drive to a designated area where staff will provide detail services. This model will have less staff than a full service model, and more than an express exterior model, but it meets in the middle in terms of customer service needs.