We have an exteded cab also, and a single snoozer carseat. I plan to keep the trailer ready to roll since hubby is the type to say on Thursday night we're leaving at the crack of dark Saturday morning for somewhere. lol
My brother, son and nephew drove OTR for years. If I had a semi with a sleeper I wouldn't worry about breakdowns so much. They seem to handle wear and tear better than the motorhomes. (sometimes)