My kids don't sleep in the car. Or anywhere in public for that matter. Every time we have a road trip planned people say "oh leave at night so the kids will sleep". NOT MINE. During our 15 hour drive from NC to NY, Brooke never napped and Madeline took maybe 1 hours worth of naps during that drive. It was awful. I wish they would sleep, but they won't. This also includes my many hours of air travel with these two non public sleepers. At least they are good sleepers in their beds at home :)
I had to take pictures of this rare event. It occurred after a birthday party that was during nap time.