Sad to say, but economics still do not support live broadcasts of motorcycle roadracing in the USA. Maybe MotoAmerica will get better shrift on this after it's freshman year but I kind of doubt it.
Motorcycle racing simply isn't appropriate for live broadcast, at least not on American TV. Overseas, they may be more flexible with their scheduling. But certainly not here.
There's just no way to guarantee that the race and the time slot will actually meet up. A single red flag can ruin the broadcast. In fact, it can throw off the entire event. AMA being both a pro-am event along with the lack of run off on our tracks, Red Flags are common.
You rarely see a Red Flag in GP, with their acres of run off, most bikes simply slide off in to the abyss, away from the racing. American tracks aren't built that way.
Remember pace cars at the 200? That worked SO well. Pace cars and full course yellows is what keeps a NASCAR/Indy race on time. There have been more than one NASCAR race that was effectively under yellow almost the entire race, and it finished on time. It was a crummy race, but, hey, it fit the time slot.
I have no problem watching a delayed race. Same day broadcast is optimal. Record the races in the afternoon, broadcast them at 7/8/9pm. Plenty of time for editing out the mishaps.
Live broadcast on the web is fine, there's no scheduling conflicts. I thought the Daytona coverage this year was spectacular, and that was a LOOOONG race. TV would have absolutely killed it.
It's hard enough to get bike racing on TV at all, I guarantee you they won't pre-empt anything to finish a race.
I'm reminded years ago listening to the Long Beach Gran Prix on the radio, driving up from San Diego. The race had, like, 5 laps to go when they cut the feed to get in to their scheduled Hockey PRE-GAME show.
Hockey. Pre-game. And they couldn't hold it 10m for the race to finish.
So, taped delay is the way to go, IMHO. It provides the most consistent coverage in a TV friendly format. You can make an actual show of it, with interviewing riders pre-race (OFF the grid in fact), interviews post-race, they can slip in a "story behind the rider" with the racing in the corner where they KNOW nothing "interesting" is going to happen, etc. And barring some tragic event, most folks can stay away from the Interwebs for a few hours to avoid spoilers.