No it's not. It's a link to one incident I can remember off the top of my head. Proclaiming "it's just one incident" doesn't make it so. Or
does this mean "well, that's just two incidents". How many incidents do we need to post where a motorcyclist kills a vehicle occupant before you decide that maybe it's a thing? My guess, you're stubborn, so you'll ignore all of them.
how many motor cycle impacts with cars end up with the people in the cars being injured?
Lots actually. Particularly side impacts when pulling out of junctions. The only thing that stops more people in cars being injured is blind luck (on the car drivers part) that the front of their car has to exit the junction before the rest of it and what side of the vehicle the motorcycle hits and whether the seat is occupied, or they have decent side impact protection.
Someone on these forums, who hangs in the motorcycle section was in a side impact last year. The only thing that stopped that accident from being a lot worse was that he wasn't riding like a loon. Had he been riding faster, he'd have either hit the wing and been thrown far further and more violently than he was (as he hit their rear door and was tossed clear of the car), or ploughed into the front or rear passenger door, at which point, like I said, a motorcycle will punch into the cabin like a torpedo causing very serious injuries to anyone on that side of the vehicle, unless they happen to have side curtains (which many don't as they're optional extras).
From all the crash videos on youtube I'm not expecting it to be anything other than a small percent
Yeah. Because lots of people are going to upload their crash videos where they plough into a vehicle and kill it's occupants to Youtube. Try live leak for that.
anyway the fact is the policy of not chasing motorbike/ped riders without a helmet is not a deterrent it encourages more of it unless the charge for riding at dangerous speeds without a helmet is a significant one which I'm guessing it's not
You should have no problem coming up with all the evidence for the facts that show the policy is encouraging more of it then.