Most modern cars lock the doors when going faster than the walking speed so in case of crash the doors are more unlikely to fly open. Similary most modern cars unlock the doors after crash so passengers can get out from the car. Tesla included. In case the door fails to unlock there usually are way to manualy open the locks, but Tesla has made it to a treasure hunt with multiple stages, hidden paths and there is a wizard at the end asking quizzes before you can open the door. So in the end Musk can say there is a way to mechanically open the doors, because there is. Its just not convinient or safe.

Has there still been real concensus with the serious science people? Last time i read about this, there were two models that are most likelly going to happen, another was slow and another was fast, but nobody could really say which one is going to happen and both models were seen equally realistic. But everybody agrees that both predictions are bad for everybody.

In any case, way we should act like the faster one is the one we are going to get.