Yes - I am kinda in “phase 2” of this whole thing. Currently I borrow my fathers pickup, then put a giant tank on the back. The tank was originally intended for spraying weed killer to large areas. Anyways - with the right hookups you can attach it to most power washers.
At first though - we just got a small pressure washer and put it in one of those bike trailers intended for toddlers. Then we would just ride our bikes around with the pressure washer. We just communicated clearly to place the trash can at the front of their driveway and allow access to their hose. We started in our immediate neighborhood which made riding bikes easy.
we do the service quarterly and charge 20-25 bucks per wash. It’s genius dude and I’m serious the demand is astronomical. We have to decline lots of requests.
Make paper flyers with contact info - request text response. Canvas the local neighborhood and let the bites roll in. My kids do 100% of the canvassing. Trust me it’s bullish….