From the article you posted:
"The car achieved speeds exceeding 175 km/h on the German Autobahn, with a mean distance between human interventions of 9 km."
While very impressive, it could not cope in driverless mode in unexpected conditions, and is far from mature. Just because early prototypes existed 15 years ago doesn't mean the technology is mature. And yes, it could overtake, but only with approval from the driver, on a motorway.
As others have said, and despite what you want to believe, this is next level stuff, and is cutting edge, new and exciting technology. If you disagree, maybe you should go back to reading science fiction novels.
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