We like to ride bikes a lot.
Some of us can get pretty close to 60kmh, some of us move at around 6kmh, some of us wonder why people would ever slap lycra on their bodies and hop on a bike at all.
Whatever your top speed or your taste in lycra there are certain limits to the human body and the explanation of why 60kmh is a nearly unobtainable number on a bike is fascinating.