A few points of clarification here. I inspected the 944 that caught fire at Mid Ohio. That was a GTS car with a fiberglass bumper, which shattered, and the cornering impact penetrated to the early steel tank. This is one of the reasons I keep the heavy bumper on my ST 944. The spare tire well was not involved in that incident. The rescue was required because the driver had buckled his belts with the camlock facing in,and could get the belts undone himself. Kudos to Jim Pantas for the save.
I also am aware of the fire that resulted in the fatality, though I was not there. The driver left the pin in the fire system, and elected to drive the car to a corner station before stopping for reasons unknown. I don't believe a rear impact was involved.
Most 944 fires are from cracked fuel rails, from balance shafts that are out of time.
Fuel cells are legal FWIW.
Good to see all the input from the social media blitz. You guys are in good hands with Dan!