Pretty neat idea if your in an area with a lot of bikes. First off I don't like the idea of the pressure wash spray getting into places you don't want water like leather side bags or windshield bags. Could also be a problem with electronics. Bikes are OK to ride in the rain but the pressure idea doesn't sound good. Also the spray wax. You never ever use any type of dressing on your tires as it might seep onto the treads.
Used to spend hours cleaning my bike, moving it three or four times to clean the wide whitewalls I had on it and then next ride, you got it, rain ! Even just a 5 minute shower and all your work is ruined.