If you carry with you a lot of energy packed in a small volume, it will find a way to kill you one way or another, no matter how it's stored. Yes, not all stora

If you carry with you a lot of energy packed in a small volume, it will find a way to kill you one way or another, no matter how it's stored. Yes, not all storage methods are the same, and batteries are probably safer than gasoline, but the reality is - lots of energy means lots of ways things could go wrong. I vividly remember my teenage stupid stunts with large capacitors charged at high voltage - those things can do a lot of damage when shorted. Also, a typical lead battery can do a number of nasty things, like release hydrogen, when mistreated; or throw a thick copper bar on a lead battery's contacts, and watch it melt down in seconds. I'm sure you could install safeguards against the various failure modes, but again, you're still carrying a big chunk of lightning in your car.