I am also finding it hard to follow this but auto locks are not a bad idea after all. I never heard that doing it manually could spoil it though. You perhaps need to be careful lest you bang the thing and spoil it.I don't really understand this question. But if they lock themselves in, obviously they can unlock it, as well. If they lock you out, it can be frustrating.
That is actually exactly what I thought. She tends to get too excited for any road trip, even something as simple as a store run. After a while I gave up and its funny, she stopped.I could see why someone might think that, because a lot of electronic things can be messed up if you make them move manually instead of using the proper electronic channels.