Fast 9 & 10 synopsis

After F&F 10, they will change the numbering system. 10 is followed by Fast & Furious 20, then 30, 40, and 50.

The next one after 50 will be 500, then F&F 5000.

Beyond that, numbers break down, so the followup is called Fractal Furious.

Exponential gains may require future F&F movies to be numbered with sophisticated algorithms. At this point the franchise will become the primary GDP of the United States.

Maybe drive dat GT-R prototype I saw at car show

When they go back in time, they should drive Delorians.

I think that for Fast 9 we will see the core team (Dom, Letty, Roman, Mia, Tej, Ramsey), but without help from Hobbs, the Shaws, Mr. Nobody and Little Nobody appearing, but I think for Fast 10 it will feature every single character returning for one last hurrah.