This really should have been posted in the
Motorsports sub-forum.
F1 is the pinnacle of single seater motorsport (all motorsport really) IndyCar is just one countries premier open-wheeled series.
Single seaters? Yes, F1 is top dog. But in comparison to other forms of motorsports, F1 is lagging...especially behind LeMans.
I say that b/c if F1 is a display or proving grounds for technical advances in motoring; why have Toyota, Honda, BMW, and a slew of other manufacturers left in recent years?
With a few exceptions, it's seems like F1 is a play thing for billionaires and oil regimes. Force India, Red Bull x 2, Virgin, and whatever an HRT is are a collection of automotive nobodies. Sure, Red Bull won a championship...but how did that help automotive industry that we're consumers of? It didn't.
The competition isn't even that great. You have studs like Alonso, Button, Vettel, Kubica sharing the same road as a dozen or so pay drivers. A mix of easily the best drivers in the world vs. those who have deep pockets & sponsorship. While this is present in every form of motorsport, I think the talent discrepancy is even wider in F1.
With LeMans, Audi has really taken the bull by the horns and the word 'diesel' followed by the word 'performance' isn't met with laughter. Other manufacturers have taken note and are pushing the envelope & rules. In the GT class, you can thank the Corvette team for engines available for purchase out of a catalog and blame them for getting rid of pop-up headlights. Damn them!
Indy, on the other hand, is somewhat of a joke. I think it is anyway. Clouded in politics from the OEMs and misplaced goodwill for using ethanol, it was supposed to become open-wheel NASCAR. That hasn't happened. It's boring to watch and no can really identify with the drivers or cars.
You watch a Grand Am or ALMS race; you can see the same cars you see on the road (sorta anyway). The drivers are usually American, which is important in the US, and the banging and crashing is good entertainment...the commentators? Not so much.
The way F1 has been trending; it'll become a spec series. It's too expensive to run a team, the ROI for factory teams is low, and every time they change the rules in the name of controlling budgets...teams have to spend even more money to stay competitive and within the rules.
Old F1 was romantic in that it was an 'anything goes' kind of series. You cheered for the beautiful losers (Mindari), stayed up to date b/c of the personalities (Eddie Jordan), and you watched the races b/c those were the best drivers on Earth driving the fastest cars engineers could design.
F1 may still be entertaining, but it's not relevant. Same goes for Indy.
In 5 years or so, it'll be endurance racing that'll be the pinnacle of motorsports. Speed + efficiency that will trickle down into vehicles on the showroom floor.