Possibly the most important piece of info says the eTaxi business is down to two competitors WheelTug and the Honeywell-Safron.
It seems the Lufthansa has changed it's mind. L3 and Crane are no longer involved.
Their idea was a liquid cooled motor in the main wheels. (I suspect the heat from breaking would cook them)
The other possibility is that for the demo they removed the brakes.
Perhaps they couldn't find a way to fit them and the cooling system in with the brakes in place.
Honeywell-Safron put the motors away from the hub rather like the 2005 video from WheelTug.
They are not that bad but compared to WheelTug now they look clunky.
Speaking of the competition they have MOUs but no LOIs yet. :-)