When I’m out riding, I expect sloppy and poor driving from some people. I see it all the time when I drive my car, so it is not going to change just because I am on a bike. I stay alert; I ride defensively, and try not to let it spoil my ride. [First, I’d like to thank Dave for being thoughtful and writing about these issues.
Cyclists, when driving, often act/drive very similarly to car only folks with the common exception of usually treating other cyclists with courtesy (although amazingly, not always!). Same high speed, low courtesy, me first, doing too much at once behind the wheel, stuff (to generalize) that I find so obviously dangerous when on my bike. If everyone who rides a bike would drive as if they were on their bike it would be a great start, and would “put money where their mouth is”.]
Source: Dave Moulton’s Bike Blog