With all due respect, it does matter what motorists think, b/c they're the ones sharing the road with us, they're the ones who have a decided majority in terms of "public opinion" (in the USA) and the leverage that goes with it, and they're the ones getting frustrated b/c they're understandably confused.

So far, bike lanes have also confused law enforcement. Especially in NYC, but all over the country, police are writing tickets related to bike lane use, even when there is no infractions. I like the general premise and sentiment behind bike lanes, but so far, they do more harm then good.... at least in terms of safety, public attitudes towards cycling on the road, and police harassment directed at cyclists.