Here's what I don't understand at all about Cassidy's argument.. is there a single free parking space in the city that's been displaced by a bike lane? Every bike lane I've seen and ridden on is right next to a bunch of parked cars.
Secondly, as far as increasing while they're currently under-utilized, I'd say that there's an argument for increasing to the point where there's a solid network over most of the city (which we're about at now). It's hard to say oh we don't need a bike lane on the UES because the west side lane isn't always full of bikers. Additionally, during rush hour those lanes certainly are utilized, I'm never the only one on a bike on a given block's length of bikelane during rush hour.
Secondly, as far as increasing while they're currently under-utilized, I'd say that there's an argument for increasing to the point where there's a solid network over most of the city (which we're about at now). It's hard to say oh we don't need a bike lane on the UES because the west side lane isn't always full of bikers. Additionally, during rush hour those lanes certainly are utilized, I'm never the only one on a bike on a given block's length of bikelane during rush hour.