We stopped at the car wash on the way home to freshen up the van. Ian normally gets a little worried when those big brushes start slapping the windows but I told him the van was getting bubbles just like he does. "Oh! Bubbles!" And suddenly it was all okay.
So when we got home, he had to have his bubbles too. My favorite is when he "swims" on his belly and says "whoa!" over and over.