But that isn't what the article talked about either (A European company did do a run like that a while though).

It did talk about "level 4 autonomy" based on a single drive with no disengagements (they mentioned they'd made a lot of drives but didn't mention their disengagement rate overall), doesn't sound like "achieving level 4" autonomy either-either.

How is one driver going to take over for 4 vehicles? Each truck needs a safety driver.