It looks like his engine blew, but the car kept tracking in a straight line.
Watched the tape twice and it looks to me like the drag chute never fully deployed.
The drag chute got tied up, it was probably burned to some extent by the fire. If the chute is nylon, fire will cause it to melt together before it deploys. From what I read on the Simpson Equipment web site, the chute may be made of canvas.
Whatever it is, it burns. They need to get the chute away from a burning car; IMHO it would have saved Scott’s life here. Possibly an emergency system that is activated along with the fire extinguishers.
Scott hit the sand hard. There was no aerodymic braking..he was probably busy hitting the extinguishers.