Just yesterday, after driving my dad's car back here to Omaha from my home town, I pulled into my driveway and started to get out of the car while it was still on... when suddenly, the speakers just seemed to EXPLODE (Don't worry, my dad said this was spontaneous and rather rare but it scared the pants off of me). As in, it started blasting static at maximum volume despite it not being at max volume.
So I thought... Well, what if there was a detection system to force filter all the static or outright shut it off whenever it happened so it doesn't risk blowing out my ears? Thankfully I was standing outside and the door to the car was open... It sure echoed across the neighborhood though.