I am in the process of trying to track down bumper stickers for my car to help educate drivers that cyclists are also car drivers, and to reassure cyclists that the reason I slowed down and followed them for ages was because I know as a cyclist it was not a safe place to pass them.
Cyclists have the same rights to the road as car drivers.
I have yet to meet a truly rude and inconsiderate driver - have had many pass to quickly and too close but never had swearing or gesticulations or gunned motors... yet.
I guess that is partly because the road I mostly ride on is well-frequented by many cyclists, and as i am in the country, most of the drivers on "my" road, know my family and that we cycle (think I've said it before, its 16km to the first store/rural settlement... all farms and orchards and lifestyle blocks from there to here...