Hubs are way too pricy for me. Still, I wish they came standard. I would love to upgrade legislation here to mandate that road-operated bicycles (meaning road and hybrid off the shelf, and usually mountain bikes since people like to commute with them) must carry a lighting system that is independently rechargeable and carries at least a 1 hour charge--enough to mandate a 6W bicycle tire alternator on the rear wheel and a small battery or capacitor bank. That stuff is essential equipment; you can make it light enough, and cut it off if you're racing on a track.