Originally Posted by
wphamilton
I took it as rhetorical since the literal answer is trivial.
Talking about "car racers" isn't rhetorical. Motorcyclists by themselves can reach high speeds. And collisions between motorcyclists and other vehicles has a fairly reasonable chance of having much higher combined speeds than collisions between cyclists and motor vehicles.
Originally Posted by
wphamilton
Race car drivers use heavier helmets because they work better. Cyclists do not, because they are an impediment to the physical activity.
I said this. And it should have been obvious to other people. And the collisions race car drivers may be subject to are different.
Originally Posted by
wphamilton
Neither of those answers relate to the question of whether a bicycle helmet is effective at all in a bicycle crash involving a car.
Yes. I also said this. And it should be obvious too.