The Tesla Roadster has 53kWh in it's battery pack. And it has been in several crashes (http://www.youtube.com/watch?v=R2b9aW1qE9E). It didn't blow up. My car has something like 500kWh of energy with a full tank of gas. Cars get into accidents every minute of every day. Unless you are driving a Pinto or are watching a car drive off a cliff in some action movie, it's not going to explode like someone detonated 106 sticks of dynamite (or by your calculation, I have something like 1000 sticks of dynamite just waiting to explode under my trunk ).Fully charged, the unit holds 53KHW of energy - the energy in 106 sticks of dynamite. What happens in an accident?