I get far more annoyed with wrong way and sidewalk (typically both at once) cyclists when I am in my car. I am a strong advocate for bikes, yet I have had several near misses with these types of riders flying out of seemingly nowhere into the road and is pisses me off that someone who drives as conscientiously as me and is very aware of cyclists may end up being in an accident with one of these wrongway/sidewalk riders. Not to mention that they give cyclists a bad rep. to other car drivers.
Al