Knowing how to do it conceptually and knowing how to do it in mass produced cars is the big thing and I am expecting this to either not be cost effective. Not sure if it will be reliable for over 100k miles, but I expect the cost to limit it to the weird luxury car space at best.
The fact that now each wheel can be fully independent with their own motors makes executing this much easier than before without adding extra hardware, simply working with software.
If you want to do full crab like the one in the article, not just front wheels like in the oldies video, you need to power the wheels. With 4 independent driving wheels you can switch between traditional 2 wheel steer, 4 wheel steer, crab (for parallel parking) and orbit for turning around in place. There is no transmission axle between the wheels so they can be independently rotated and controlled, just like on a film dolly.