Fact checking in the real world--why authors can't ever really leave work behind

I've been vacationing in Oregon and Utah, both of which have way better weather than Arizona has right now. I didn't mean to work at all, but the problem (or benefit, depending on how you look at it) is that you can't turn off the writer's brain. For example, when we went white water rafting, we took a 15 passenger van to the river head. The whole ride up I was thinking about the fifteen passenger van I have my characters riding around in during Slayers. (That may or may not be the actual ...