As you may have guessed, the economic downturn and two world wars sandwiching the decades when motorcycle chariot racing was invented probably wasn't a great time to introduce the sport. It quickly fizzled out just about as abruptly as it arrived, which is super unfortunate considering how cool it is.
I got to see them recreating this at the Sydney Royal Easter Show a few years back. You could tell it was scripted but it was still super fun to watch.