The guy you linked reminds me of a Disney movie about a Jamaican bobsledding team ... which unfortunately, I remember hearing was kind of dumb and didn't do the real life story justice.
Interesting and very cool that there are also Jamaican mushers.
As for the videogame, sadly, I think the lack of a sim might come down to how big a market there is for it? I don't mean to be a Debbie Downer, but that'd be my guess; however, I think smartcelt's idea for an adventure game could help matters, I know I'd be intrigued!
And I could be talking out of my butt about the market for it, not like I've looked this up, and if they can spend years getting the cockpit right for my older brother's flight sim I'd never heard of before, and make games based on the Olympics, they can damn well make a game about the Itidarod! Now, who would you send letters to about making this happen, I wonder? lol



lol