I don't have a pressure washer yet, but I have an IK Foam Sprayer that I'll go over the car with first (BH Autofoam) and then hose off after a bit of a dwell before doing a contact wash. The foam probably doesn't do much (if anything) without a pressure wash afterwards, but it makes me feel better, especially in winter. I also clean the car every week and I think just that in itself makes my neighbours look at me weirdly.
The guy next door has a four year old Vauxhall Corsa that I've seen clean a grand total of once since he moved in and I guess that is because he took it to Vauxhall to be serviced and it had a complimentary clean by them, so that is his stance on car cleaning. It is sat there now two thirds caked in dirt, it is meant to be black, but from the bottom of the windows down it is solid brown. Parked not too far away is my 16 year old BMW approaching 200k miles which looks spotless (and new) in comparison. People have other priorities which is fine, but cleaning the car once a year and spending probably 8-10 months of that (especially in winter) getting your hands and clothes dirty every time you get in and out of the car is another level to me.
Just wait until I'm off work next week and I give mine a clay/decon, polish and wax. That'll probably blow their minds