...I'm not sure you could have prevented the initial crash, but the pile up behind it is entirely the other drivers' fault. If other drivers should have seen

...I'm not sure you could have prevented the initial crash, but the pile up behind it is entirely the other drivers' fault. If other drivers should have seen and avoided the pileup, then it seems reasonable that the Tesla driver should have seen the unexpected braking and overridden it. In both cases, humans failed to react fast enough to something that required active focus and fast, split-second reaction.