I bought a pair of those Adidas Eddy Merckx retro cycling shoes at the Adidas Originals store in NYC about two years ago. As it was mentioned they are horrible for cycling but very comfortable casual shoes.
This site has a photo of the original Adidas Eddy Merckx cycling shoes that came out in the 1970s.
http://www.rapha.cc/products/vintage...hp?unit_id=111
I would love to get a pair of the original ones!