That video is tantalizing, but it's dated 2010. If it works as well as advertised, then why has it taken three years to be part of Android? I'd love to see AR

That video is tantalizing, but it's dated 2010. If it works as well as advertised, then why has it taken three years to be part of Android? I'd love to see ART work out though. And the video is almost worth watching just for the very awesome French accent.