We had the best luck with Jack driving to Spartanburg and back last weekend. On the way down, in the middle of the day, he slept the entire way except for a few minutes of happy cooing around Kannapolis. Not bad for an-almost-3-hour car trip at 6 months. Then, on the ride back we left right at bedtime and he slept all the way to Greensboro, until I opened my big mouth about a mile from the house. No sooner than I had said "What an amazing kid, I can't believe we made it all the way home without him crying," a shrieking wail bereft of all hope and peace erupted from the back seat.
Needless to say, I drove that last mile with my head hung sheepishly and a finger in my ear. And I learned my lesson.