The "formula" for race cars has little
to do with saftey and much to do with the establishment protecting its self
interests. An example is the ban on catamarans in America's Cup racing.
They aren't unsafe just different and not what the establishment is prepared
to do. Does the ban on Arabs in QH racing have anything to do with safety?
Probably not, but a ban on "riding too fast" for Rookie Horses and Riders
would certainly have to do with safety.