What I would certainly do is try to get media attention: online and offline.
To get that you can divide platforms by interest and disect your project to see what is interesting to what media?
Low hanging fruit is often local newspapers: if an inhabitant has an interesting story and you provide a well written pressrelease (including interview like quotes) that doesn't scream 'advertisement' it might be published. Or even get an interview invite.
The same goes for special events on specific locations.
Other topics are:
- being disabled
- racing
- empowerment
All of these subjects have magazines and blogs about them.
Because the combination of these three is not very common, I can imagine it can even be an interesting topic for talkshows (Oprah style shows like the empowering inspiration coming from people overcoming their problems) and broader interest magazines. (Especially if it already got some attention and response in niche media.)
If a part of the profit or turnaround goes to charity, you'll make media sharing your story look more sympathetic.
Don't forget you can also write to 'filmmaking' magazines and blogs if you have an insightful story about making the film and treating such a subject.
This is just the marketing part, btw, but it is essential to get 'awareness' about the documentary.
Make sure the pressrelease you send somewhere connects to their topics and audience. Writing to a magazine about disablement will be different from what you write to a motor racing magazine. (At least in the first sentences.)
I finally watched the teaser: I think it starts out too text heavy.
My suggestion would be to skip google and show the racing shot from 1:04 right after "live life to the fullest" cut to the wheel chair where she is with her kids while she says: "I.... to feel alive."
It sets the drama up in 10 seconds and 2 shots.
After that you can do the Googleshot from 0:46, because that is the question you created with the first 2 shots. Followed by the wheelchairs, the falling motorbike and her laughing.
And from there show some more, put in some drama and excitement, but keep it short.
You end with 3 times ROAR: 1 is enough.
The inspirational text is not centered, btw: looks a bit clumpsy.
(And I don't like the font, but that is personal I guess

I'm not a graphic designer, but sans serif fonts look neater)
You don't have to make this teaser disappear: it looks like it got some attention already.
But I think it can be stronger, although you will have to try and find out my suggestions are any good.
PS.
If you are coming to IDFA next year, let me know!