This is truly tragic.
I must say, it makes me think twice about a porche. That tree isn't a big one and from the looks of what's left of the car, the car just disentigrated. I acknowlege speed can do a lot of damage on it's own but I would have thought to do that much damaage the tree would have had to be quite a bit bigger.
Fire is pretty devastating to Carbon Fiber. Plus CF doesn't bend, it breaks and shatters.