This bloke may not have the yellow jersey, but for reasons unknown, he does have a pink bike. Although the painstakingly placed postcards in his spokes may well be deemed as not too aerodynamic.
Tour de Tokyo?
Photographs from a small group of islands
PeterD says
The bike is a fixie (fixed gear bike, originally used as track racing bikes), and it is part of the fixie sub-culture to put cards in the wheels. See it all the time here in San Francisco.