Milka Duno, who apparently is a real-life racer (but who drives the #23 CITGO Honda Dallara IndyCar instead of, say, something like the Mach 5), is headed to Berlin to play the role of Gearbox in the live action Speed Racer movie. The Brothers Wachowski are writing and directing, with Joel Silver producing.
It would be uncommonly cruel of me to remind all Speed fans that those three folks were the same people that crushed the hopes of a generation with The Matrix Revolutions, so I will refrain from mentioning that.
Anyway, I have no idea who Gearbox is in the whole pantheon of characters. Maybe a more savvy Speed fan can let me know. It must not be too big a part, though, because she'll be shooting for a week and then returning to the States.