Really?? They couldn't put it out with a Dry Chem / water combo attack?
How much bigger is the 911 engine block compared to a VW Bus case?
I have put out many Bug and Bus engine fires that were burning the Magnesium case too. You just need MORE GPM! And not be afraid of a little Snap Crackle Pop!
True, Magnesium, especially in shredded or chip form can get going really quickly and burn really hot!!! Then, you either let it burn out or use special extinguish products to encase the burning metal.
But, a normal engine case should not have ignited that readily. Who knows what else was in the engine bay or its condition that contributed to the blaze?
Either way, too bad for the little German car