As some have noted it's WAY too early to be speculating about the cause, and solutions, but I have -- like most -- been thinking about this a lot. I've thought about a lot of things, like the burst panel/chute connection, or some chute connection to the finish line (via GPS or some other signal), or some other ideas. People like Jim Head and John Medlen will have lots of good ideas I'm sure.
But it occurs to me that nothing in the car should be the final key to the solution. Just look at the boomers that TonyP and Scott and others have had in just the last few weeks, and it's clear nothing on the car should be counted on as the last resort. The cars explode so catastrophically that no system could live through it, or should be counted on to survive.
I think the solution should be on the track, with some form of "catch" system. The sand traps and nets need serious examination, Del's roll at Pomona was just one proof of that. Someone suggested aircraft carriers, but as was noted those are incredibly sophisticated and expensive systems. And they rely on the plane to have the hook out, and to catch the wire. Drag racing needs some failsafe system of traps/nets/whatever to catch an out of control car at speed.
I'm not smart enough to know what that is, but I believe that if we're smart enough to make a car go 0 - 330+ in 1320' we should be able to design a system to stop one safely when it's out of control. They came up with the SAFER barrier for circle tracks, and it has saved a lot of lives. Let's get those people involved in this.