It's rather special and the whole thing is a bit of a mission to make. So you won't just nip out and buy one. Make sure you read the full article on: http://antranik.org/worlds-lightest-road-bike-at-2-7kg/
I would love to get my hands on this thing to really see what it's like, would be good to know how it rides too.. Any comprimises on performance or compliance.. Wait about 30 years and I am sure there will be 2 or 3 examples like this. Ok maybe not but it's fun all the same.