I think he may be asleep.
At least, I think I heard deep breathing before the furnace kicked in.
Maybe the Travel Tabs for motion sickness are working. He hasn't thrown up again since he came to me, garbage receptacle in hand(s) to weakly whimper..."Mom? I threw up..."
At least he really does know what to do if he vomits in the night. It's a frequently asked question just before I turn out his lights.
So... now... maybe if I leave the "porch" light on, and go quietly...