The safety teams that have worked on the cars and the fence deserve a pat on the back for this. 10 years ago and that driver would be dead, along with some fans.
It's amazing, but still got torn to shreds. I bet people were hit with debris. Maybe a better set up would be for the track to be lower, in a pit. The audience would look down into the pit. I'm not an engineer, so that's really none of my business.
The leaps and bounds they've made in regards to safety really do deserve a great deal of recognition. I'd hate to see the same wreak a decade or two ago.