Carbon fiber frame combined with over 600 ponies = wanting to leave the road. If it weren't for the downward force of F1's they'd leave the road nearly instantly. Professional racers tend to keep this characteristic fresh in their heads....Its certainly not a tin can like some people seem to act like it is, & I think they hit it at just the right spot to basically cause the worst that could happen.
My guess is it hit that pole at high speed right in the side which snapped a lot of the bolts connecting the front and back pieces, that exposed the fuel tank which got torn open (if you look at early pics in this thread you can see a sorta hollow metal piece that looks like it was cleaved open) & that threw gas out which ignited........I wonder if Porsche has gotten any calls concerning the 918 Spyder, it seems to share a pretty similar configuration, in fact it might be even worse. The fuel tank is right up near the top, right in front of the engine and the muffler/exhaust is at the top front of the engine (so right next to the fuel tank). Plus its sitting on top of the battery pack.
Basically the passengers are practically sitting on the gas tank
..... ^^^^^^^ The tank location is ideal in most type of crashes but obviously would have been heavily damaged in this type of sideways impact where the car is almost ripped in 2. Not that it matter at this point for the occupants who would more than likely be dead at this point.
So it sure looks like a high speed crash where the driver lost it and went sideways into 2 trees and a light pole. Reckless driving.