I'm getting a fat bonus in a couple of days, and am seriously considering buying an AED (Automatic External Defibrillator) and keeping it in my trunk. Along with CPR, timely use of these units are pretty much the only thing that can save a person in cardiac arrest. Not the average thing you'd think of getting for your car, and they're not cheap ($1k-$3k). And it's not for everybody; most people would be squeamish about helping out in accident and trauma scenes. But if you're BLS certified like me, this would be cool to have (anyone can take a CPR/AED class; they're cheap, and take only a few hours).
I was thinking car manufacturers could maybe offer it as an option for those interested, and make use of the car's electrical system somehow, maybe by keeping the unit charged, if an AED was developed to use rechargeable batteries.
Yea, I know what you're thinking . . "hmmm, forced induction, or an AED?"