Set up the event as a model making sure the rules are not just the local flavour
but consider there is more to the World that you can see from your flat spot.
Lead by example.
Make it work so the easiest thing is to adopt it and soon they will have it also.
If you start with asking questions and permission, that is as far as you are going to get.
A Roadster class might play good in some areas but is not Worldwide.
What is a Lakester if you don't have a Dry Lake, a boat ?
The GT and Coupe variations are more universally under stood as are the Open wheel and Liner.
Even the bikes could be a lot easier and simple to administer (this is where I could say a nasty)
if you took the local personalities out of the mix and looked beyond their limited view.
Basically you need to take a leadership position first that is configured so the rest can follow and soon they will.
Remember it has to be so the Rebels from down under can take the best Japan has to offer and beat the Brit,
so the American can take them all out.
Hell , even the Germans can be understood if you have something they can translate.
The madder you make the rest of them , and they are not denied the chance to beat you with some silly local policy,
the better I like it.