I'm all for it too! I live inner city and don't have a garage/driveway and times like those are the times I really wish I did have one. So to make up for that, I have been known to pull up at the cafe up the road and order a coffee to have in the car while I wait.

Done it with the two also when they fell asleep in the last 5 minutes before home (what is it with holding out till the last possible minute!?!) I pulled up under a tree around the corner, reclined my seat and commenced the trio of napping

Enjoy it I say!