[ayanray]

I worry this is a case of micro vs macro environments. In a macro environment, it would be of interest to the general public to not determine why 1000 people died in a train crash. It's worth an exhaustive multi-year study and the victims' families can join a class action lawsuit and be tried as a single case. It's also in the best interest for all parties to find out why that crash happened in such a controlled environment to improve the service (private use of railways, well-understood environments).

In car crashes, each case could be different and difficult to figure out what was the exact cause. Cars are becoming more complicated, as with farm equipment vs farmers or the "check engine light". Without transparency into the internals, I wouldn't know what broke or was it my fault or the car and I would probably have to rely on the honesty of the company to tell me or my family that.