It was a bit hard to judge since we only got the field-of-view straight ahead, and if I'd been riding there myself I would have been scanning the side and rear view at regular intervals, but I felt he was riding a bit close to the side, almost in behind the parked cars instead of taking the lane. Which might explain some of the cars buzzing him - but not that honking huge bus passing him blinking left!

And the ones who swept across in front of him, of course... geez.