I agree Reb. I didn't mean to imply it was an anomaly so it doesn't need to be looked at to see what could have been done to keep it from happening. Ideally, the cell would have stayed in the car and, if it had, the chances of fire would have been minimized. The device you posted addresses a worst case scenario which, of course, is what safety is all about. Prepare for the worst and hope for the best.
Anybody who's watched the various angles of the accident available thanks to social media knows there are a lot of things to look at with this accident - on the track, in the cars, in the infield - it could have been so much worse...thankfully everyone is still here to try and learn from it.