Question for everyone: Is there any evidence that Honda had anything to do with this concept vehicle? I can't seem to find anything linking them to the bike. And since the bike shares ABSOLUTELY nothing with any of the actual CB750s (minus advertised displacement, which the designer just made up), it seems to me that the designer was just trying to capitalize on the popularity of the CB750 to get more attention for his model.
If someone finds evidence otherwise, I'll rescind what I've said, but until then it's stupid to argue about the merits of Honda designing a hydrogen-powered motorcycle when 1. Honda had nothing to do with this and 2. This concept bike exists as a 3D model only, with a list of made-up features to go along with it.