I'll leave Fenway in the car only if I can see the car at all times. So if I go out to eat, I have to park my car and sit by the window where I can watch him. If I can't, then I don't eat there. This of course is when it's nice out (not hot - not cold) and I can leave the windows open a crack. He usually will watch for me about 5 minutes and then he goes to sleep in his little cubby.