[throwaway7767]

The statistics aren't in yet, and it's too soon to make a reasonable comparison.

That said, I think GP will be proven right in time. Risk compensation[0] is a well-documented phenomenon and this seems highly likely to trigger that sort of behaviour.

[0] https://en.wikipedia.org/wiki/Risk_compensation

[greeneggs]

As the system gets incrementally better, paradoxically it could get less safe, because drivers will get more used to relying on it and stop paying attention.

[brianwawok]

Except the less human drivers the safer the overall system. Less people to crash into others.

[mason240]

Right, but the problem with these partial systems is that they still require the driver to be fully attentive.