I'm in.
In the promo they say that one team doesn't make it to the starting line (or past the starting line, something like that). For those that are curious (no real spoilers other than what was reported a couple of months ago regarding teams spotted at the airport)...
Spoiler!
Not sure what happens, but Bopper doesn't appear to actually run the race, and he is replaced by Mallory (
http://en.wikipedia.org/wiki/Mallory_Ervin) who competed on races 17 and 18 with her father. Mark and Mallory appear to be the team who actually run the race.