I was at the factory yesterday, and found that Tesla is doing some kind of market survey on the idea of offering some kind of a car wash service at the superchargers. I think the service is offered by third party (I think it was EcoGreen at Fremont), facilitated by Tesla. They had questions in the survey such as if we are interested in such a service - subscription based, or pay per use. They would wash the car while it is charging. I think they are already offering the service at the Fremont Supercharger, as a pilot program. They had a Model S that had just been washed on display.