It seems almost common in Sebastopol.
Today I had a commercial truck + trailer slam on its brakes in front of me because someone pulled out of Safeway's parking lot into the middle lane next to him. Yesterday I counted 3 cars doing the same manuver with 1 trip through town.
Countless times have I wanted to exit Andy's or the gravenstein station, only to have my path blocked by someone sitting in the middle lane.
It's not a crutch for impatience or inability to properly make a left hand turn...