You forget the heat cycles and the rapid cooling with components with dissimilar contraction and expansion rates.i don't want to sound bad but after i heard this i was talking to a buddy of mine and told him i bet they had a carbon fiber bottle in the car..
i always wounder how many times that fiber can move " as in fill and flex" until it blows up. just my 2 cents
but that on the bottle heater that is a big saftey for me that is why i have a hot water tank. on electric heater.
my rip man no whe is in hot rod heaven..