If done correctly it can be done in a matter of weeks.. We just had a 9 day turn around on a 45 min cbs sports show. TONS of POV camera to go thru and a crap load of camera footage. Just takes man power and big computers to just be able to crunch thru raw footage.Sponsors need visibility/fans. Fans need content. It's that simple really. Even if TV shows only show 25 trucks, that's still good but the bigger problem to me is those shows aren't able to be produced until months after the event is over. By then, everyone that's a fan likely already knows the outcomes, etc.
Even the Red Bull Mint show, which is cool, plays it like a current event. But two months after the race everyone who's more than a casual fan already knows the outcome so the whole build up of what's going to happen/who's going to win is pointless. It's a great show to open the door but once you've got a person interested, how do you keep them around? They need content. At some point it can't just be about simple exposure, it's got to be about sustaining a fan base. And that's really hard to do when you can only marginally provide real time or even near real time content from the sports single most important event.
On a Doc style show now way it could be done. But the live race format it can be done in a couple weeks NO problem.