I'm not sure what led to that decission, but in the end it's a concept vehicle. They mention how braking can affect tyre wear, depending on where they're located. Maybe that's the reason they included this breaking system.

Or maybe they just wanted to try out the technology?

A very interesting concept, especially the brakesystem:

They equipped the vehicle with an induction brake, which works magnetically. If you need to brake to a standstill, it'll utilize a clutch-like brake that's part of the drivetrain and submerged in oil. This way, the abbrasions can just be filtered out and never get expelled into the environment.