I don't know, but I decided to find out.
I've seen several threads recently that carried the sentiment that "all cagers hate us no matter what". "They will forget the 99 cyclists that obey all the rules and remember the one knucklehead." Heck - I've even thought this stuff myself at times. But then I started wondering - am I doing the same thing when it comes to motorists? Hmmmmm.... I immediately decided to do an informal survey on the ride home today. I counted all cars traveling in my direction (don't ask why - it's MY survey - I get to make up the rules as I go along). I divided them into three categories - 1. Those that did something obvious to make the ride safer around me - slow down, edge out, etc. 2. Those that basically kept driving exactly the same - but did not make me feel uncomfortable in any way. 3. Anyone that did anything to make me feel uncomfortable.
I wasn't totally surprised by the results, but it did give me pause. I have a ten mile commute on surface connector streets in metro Atlanta. I was passed by a total of 68 cars. Of those - 61 did something obvious to help me out - 7 just kept on rolling - and (you guessed it) not even one did something stupid or aggressive. There was one lady that was waiting to pull into the street that put it into reverse, backed up to give me more room and then waved.
My experience could very well be the exception to the rule, but I'm going to recalibrate my opinion of motorists.