I suppose shorts are easier to cause by physical breaching than fire by introduction of spark (e.g. you can puncture a gas tank and still not have it burst into

I suppose shorts are easier to cause by physical breaching than fire by introduction of spark (e.g. you can puncture a gas tank and still not have it burst into flames without ignition). But on the other hand, I'd assume the majority of car fires are caused by either fuel or oil lines into the engine being punctured and leaking around something hot enough to ignite them. Over a longer maintenance period (10 years+), I'd still bet on insulation over physical containment of a pumped liquid.