Lady here at work always tells me daily:
"I know "The rule" says to ride with traffic and on the street, but I FEEL safer riding against traffic on the sidewalk...and I never EVER go over 5-10MPH because I fell down once."
I'll show her this, probably won't change her mind, but maybe when she's recovering from being ran over down the road - I can at least say:
"I TOLD YOU SO........."