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Behold The Hyundai Uni Wheel. Transportation May Never Be The Same
(cleantechnica.com)
This is a most excellent place for technology news and articles.
There's still CV-joints there in the video despite the uniwheel. You can't turn the wheels without one. I'm probably just not understanding this but seems like instead of making the drivetrain more simple this just adds more moving parts that's going to need oil changes and replacing.