Thanks for your responses. Could you get into a little more detail about the pricing. Are you guys going in there with a cold water pressure washer, applying soap, scrubbing down by hand, rinsing then drying for $6.00? $85.00 for doing the same as mentioned to tractor trailers? What about applying a wax to the surface? how much extra would that be? Do you recommend a hot water unit to do this work?