This is what almost everybody misses. What makes the time buy work for INDYCAR is the commercials that you see are the official INDYCAR partners, Firestone, Honda, Chevy, Go Daddy, so they could just pay INDYCAR directly for that time and they would also get the higher exposure for higher network ratings. The downside is INDYCAR is so inept at selling they would need new people to sell additional commercial time. They would also need some new people in charge of TV for the series because the ones they have now got us in the fix we're in.
But selling the broadcasts themselves would work. ABC takes the races they do now because they have slots on those few Sundays when they don't have properties they value more. You could do the same thing with the other networks. Once FOX is done with NASCAR you could pick and choose dates where they could put on races, Saturday nights especially when they have a weak lineup. You just have to work with CBS and NBC to do the same. You're still going to go up against the same Masters, US Open, baseball, football, basketball as before but now you're inthe slot on he competing network that has counter programming to promote. So long as it's in the contract that the announcers can promote the next race on a different network, following the races from one to another is not a problem that can't be beaten.
INDYCAR could provide the production they already do, have the same announcers all year which means they can upgrade the talent because it will be more attractive as a full time job. Another key is what to do if it rains out a race. You could possibly buy insurance and contract with Speed to televise the Monday races. The other issue would be qualifying, that too would have to find a cable outlet. I would be happy getting them tape delayed to be shown in prime time on a cable channel to get more viewers and tell the few thousand diehards to shut up and watch them online if it's that important to them.