So just got my first Porsche, loving the winter driving but hating the spray and general salty muck that is kicking up on the sides and coating the intakes. Had it coated by Porsche but wondering the best product to clean the paintwork and the vent plastic, and any advice for internal dash...

I live in an apartment complex where I don't have access to a hose. I was thinking of buying some cleaning supplies to wash the car myself, but was wondering if anyone around the area has experience w/ self-service stations or know of any that offer a hose/pressure washer where I can just bring...