If you've ever driven Berlin inner city during rush our with cyclists driving on the road, vans parking on regular traffic lane to unload (no joke), people jaywalking, etc. you'll probably find it hard to believe that any autonomous driving system should handle that in the near future.
How about making roads only for bike lanes, having proper metro stations and public utility(such as ambulances?).
I almost laugh when I see them crawling like that.
Most likely the car is on autopilot, and the driver opined to take his attention off the road and do something else. I see that occasionally with Teslas driving from LA to Vegas - a giant semitruck up front is something that you know radar won't screw up, plus it removes incentives for other guys to cut in front of you, as a spot behind a truck is rarely that desirable.
You can drive fast on the left lane, a Tesla goes up to 220kph super fast, but there is usually traffic and you frequenty have to slow down to 120kph for a while and than accelarate back to 220kph.
That frequent accelaration from 120kph to 220kph, is what kills range.
Ideally, if there is no traffic, you engage Autopilot and go with a constant 150kph for great range and good enough speed.
However you can't keep 150kph on the left lane, since BMWs and Audis will push you off when they come with 250kph or more.