@spokey - you are near me and i have had folks get aggressive on Sunday mornings in the past on some quiet roads - off the beaten path - in town. It stinks as I keep to the shoulder and don't hog the road on my bicycle. But I have had cars pass very closely while blaring the horn just to harass. Even with no other bikes or cars on a two-lane semi-farm road.
That being said, I just saw a group ride out on Dukes Pkwy W last weekend, of about 8-10 bikes, taking the whole freaking lane. That behavior just stirs the bike-hating crowd.
I have recently taken to riding the canal path more than the roads.