RE-35 mockup by re35.net.
This recently revealed April Fool's Day hoax has been making the rounds. Lots of people bought into it, even PopSci. Not many people seem to remember that this was almost a reality 10 years ago. I'm getting old.
I remember being pretty excited about the Silicon Film EFS-1 e-film cartridge back then. It was pretty hot vaporware for a couple of years, and I think there were even semi-working prototypes. It never came to fruition however, which was probably for the best with it's 1.3 megapixels and a terrible crop factor.
You can still read about it over at DPReview.
Seen at B, and Photo Rumors.