Your car will lock you out, if you leave it running (and the windows are left up). A friend of mine did this twice and called me to ask about it, and then he wanted to try it again, without lowering the window as a precaution... (!) I warned him to lower the window or else I would never speak to him again.
Molo, right now I have the same impression here. After all, you waited until five outlets were ruined.
You've said the hair dryer stops working.
Later it seems to be able to "work" again, and do something to your next outlet.
What can you tell us about the five outlets that you saved and compared to other still-working ones?