I can't say that I never go the wrong way, I cut up a lot of one way streets and such. But when i do, I never expect anything from cars and always ride as if they don't see me, because I'm the one breaking the rules, not them.
Only time I've ever been in an accident is when I was riding with traffic, following all the rules.
Just ride like your invisible and don't play chicken w/ an auto, you won't win.