Do drivers change lanes for you?

As a driver, most frequently, but a bicyclist with a trailer and kids sometimes and frequently a bike commuter, I find this post about Legalizing Changing Lanes very interesting.  Please do read through the arguments if you have time. 

http://www.thewashcycle.com/2011/12/legalize-changing-lanes-to-pass-a-bike-in-marylands-no-passing-zones.html