Yeah things go real bad at 300 and the sand trap fails...
It depends on the track...
Some tracks, like in Arizona, can extend the shutdown area for miles. Englishtown is at the max....there's a road that crosses the end of the shutdown area and it can't be extended any further. I was at the track when Scott Kalitta crashed and died and when Neal Parker crashed and died in an Alcohol Funny Car at E-Town. They re-engineered the sand trap and catch fence but I believe it'll only be a matter of time before another death will occur.