I have started to take a bit more care with cleaning my cars, albeit its a quick blast off with the pressure washer, then run over with sponge and pressure washed off. There's only one hand car wash i'd use near me, Olly's Posh Wash in Orpington, been around for decades so long before the supermarket/eastern Europeans started up.
I used the posh wash a few times for my van, not bad but bloody deer. The one in holmsedale road, bromley aint bad either, dependant on what side of orpington your on..