not only that but surely 'per capita' is a terrible measure to use for normalizing a place like manhattan where the population during the day (aka the size of market for bike shops) is such a large multiple of the 'per capita' population (http://cache.gawkerassets.com/assets/images/4/2012/01/8efea7...) .. surely a better normalization statistic would be sales of fixies / sales of all bikes