My DS has recently turned 3 and is now quite hit and miss in terms of whether he has a nap or not. However if we go out in the car for more than around 15 minutes he fairly consistently falls asleep, regardless of the time of day.
I usually let him continue to sleep in the car once we arrive at our destination until he wakes himself up, but the problem is that he always wakes up extremely grumpy and this is inevitably followed by a mega meltdown when trying to get him out of the car. This seems to happen even if we've arrived at an activity he was really excited about before the nap. Last week in this situation I had to give up and take him home after 45 minutes of him screaming and refusing to move from the ground of the car park :(
Any tips for dealing with this? It's really getting me down and it's making me very reluctant to go anywhere by car which is a real problem as we live semi-rurally.