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Tesla knew Autopilot caused death, but didn't fix it
(www.theregister.com)
This is a most excellent place for technology news and articles.
It remains to be seen what hardware is required for autonomous driving as no company has a fully functioning system, so there is no baseline to compare to. Cruise (the "4k monitor" in your anaology) just had to cut their fleet of geofenced vehicles after back to back crashes involving emergency vehicles along with blocking traffic and attempting to run over things like fire hoses.
Cruise and Waymo have self-driving cars, without safety drivers, driving around cities right now.
We know what hardware it takes - More than just cameras and some premapping is required.
Did you not read the second half of my comment?
Mercedes made level 4.