I doubt this is a permanent withdrawl from road racing. For the time being, it does seem like a good idea, though. We can speculate all we want, but I'd bet there may be plans to re-enter Superbike racing in the future. Who knows about the details, though. There's no reason why they can't be competetive with a well funded, well orgainized, well engineered racing program. I'm not particularly an HD fan, but greater competition improves racing and technology, which is definitely a good thing. So, let's hope they do come back eventually.