My in-laws have a tradition for Memorial Day. They wash their cars, but not just pull them up on the lawn and hose them down. They do it right--clean inside and out. For years my family joined the in-laws in this tradition, but then we stopped (possibly after the blue GMC Suburban fiasco...). This year we decided to join them again.
Our cars needed a good bath. We've got four kids and four kids can turn a relatively clean car into a mess rather quickly. The in-laws vehicles were finished first, then the van and then my little car. While we cleaned them we also tried fixing little things that can get broken or need attention in a car.
Why are the kids playing with the hose? We have rubber car mats in the van and they needed washing. The mats and the kids were soaked. I don't think the kids needed washing, but can you really stop them? The umbrellas we keep in the van were put to good use.
Eventually, all the cars were cleaned and ready for the summer. And since we no longer have the blue Suburban, there's a good chance we'll be back again next year.