mobile laundry service cl/cc sites

Hi I am rattling around a business idea. Would anyone be interested in using a mobile laundry service when staing on cl or cc sites.

I have jsut come back fomr 2 weeks away in the van on a rural no facilities site. After a lot of hand washing and trouble with drying, the kids had to have new clothes.

Please let me know your thoughts and whether you would think of using this service as I know it can be very expensive and time consuming using on site laundry facilities when available.