Now y'all know why I removed the factory mirrors.
And also why I got rid of my daily 405 commute and moved out of Orange County. That's an irregular occurrence now, instead of a daily one.
It looks like he was doing between 40-80 Km/hour (25-50 mph) for most of it. I liked when he merged to the right and almost took out another lane splitter. That was a bit close.
Occasionally, a sport bike will come up behind me so I will pull into a lane and let him pass. Usually if other bikes see you coming up from the rear they will move over too, but not always. Harleys are the worst, as they're wide and slow, but don't think that they are. Sometimes you have to move a full lane to the right and go around them before cutting back over.
And in twenty years, I've had maybe three cars specifically slide over to block me. I just go a lane or two over and continue on. Honestly, most cars will pull away a little if they see you coming up. I always wave at them as I pass. It's just accepted here and considered normal. Whenever I'm talking with someone who thinks it isn't fair, I reply "You could always get a bike."
It was also hard to judge how wide this guys handlebars are from that viewpoint. Notice towards the end that the bike he comes up behind was a lot more wobbly? This guy was skilled, but he was still pushing it pretty hard. Maybe the camera had him going just a bit more for overall effect. But still, I wouldn't be surprised to see him end up like that girl on the R1.
And there's always someone more crazy than you. I once watched a bike split lanes into oncoming traffic in South Korea. No thanks.