Via Ars Technica:
BMW has used the slogan “efficient dynamics” for a few years now, but its designers have taken that charge quite literally in this case, with an emphasis on “dynamics.” Yes, it moves as a conventional motorcycle moves, but the frame and power unit reconfigure themselves depending on riding conditions. Although the engine is a zero-emissions power unit, it resembles the horizontally opposed “boxer” engines currently found in BMW’s motorbikes—but only on the move. When the bike parks, the power unit folds itself up like an accordion.
The black triangle frame—which is meant to evoke BMW’s first-ever bike, the 1923 R32—also bends and moves, doing away with the joints and bearings we’d see on a conventional bike. The steering is even speed-sensitive; at higher speeds, the frame becomes less flexible and more stable. The tires are also adaptive, reconfiguring themselves to optimize ride comfort and handling on the fly.