See my comments in the NASCAR forum.
No matter what we do or legislate there will be deaths, or almost even worse life crippling injuries in racing.
I raced in an era when there were drivers killed or crippled almost every weekend. Far too many people I knew died.
I was lucky. I had two major suspension failures on airport tracks. At a real road course it would have been big time trouble. And I rarely raced on airport tracks!
We can never make Motorsport a 100% safe but we need to do all we can.
Also remember many tracks are not making much money and safety upgrades can cost big money.
No promoter/owner wants to see a driver die or be crippled but he also does not want to go to the food bank to eat.