Two things:
1. my radio remains on after shutdown and the door is opened.
2. Cruise control, on occasion, will moderately brake for opposite direction traffic- could be alarming for traffic behind me.
Never had number 1 happen, but my truck (especially at night) seems to think on certain roads that there is a stopped vehicle in my lane and will literally slam on the brakes and then let right back off — after everything is in the floorboards.