Comment by thinking_cactus

Meh. The car wash problem is an underspecified statement. It's like, hey, I just popped into existence and someone asked me if they should drive to the car wash nearby.

It's not an insane assumption that the user isn't dumb and has some other reason to be asking the question other than it being a trick/stupid question (duh, if you want to wash your car you need to drive it to the car wash!). Taking it as some ultimate measure of intelligence simply doesn't make sense to me.