Hmm, your 2000 lb car that guzzles gas imported from "countries that don't like us very much", clogs our roads, pollutes the air, and makes all the noise pollution one can possible make. I can't stand cars, for the same reasons you suggest, cyclists are allowed and encourages to take the lane especially when they feel unsafe, and guess what drivers that honk make you feel unsafe and more likely to take the lane. Have a read through http://www.cityofboston.gov/bikes/ which is the city's official bike position, laws, an suggestions. Another fantastic reason to cycle is that anger you display just goes away as you enjoy the breeze in your hair and riding past all the traffic (which is also allowed by law) making the whole commute a joy instead of a chore, that is until someone honks at you...