It’s a brief bit of filming from the side of the road, but it does confirm that the Matrix 4 is featuring Ducatis. In the footage Reeves is harnessed to an overhead rig whilst Moss fakes riding the bike, the whole set-up is locked into a Process Trailer which lets the film crew do it’s work safely while moving along a road.
In the rear shot you can just see that this Scrambler, although it looks like an 1100 has an underslung 800-style exhaust and a car mudguard over the back wheel, this is probably to make sure that no part of Keanu gets caught in the back wheel whilst he does whatever it is he’s going to do in the scene.
