Originally Posted by
El Duderino X
In my case that's because they're usually too busy pretending not to notice that they're about to run me down. Seriously, I've had more close calls with Prius owners than any other particular make/model owner. It's downright spooky.

They're just miffed that, despite their $25,000, environmentally-conscious, "green" *coughcoalnuclearfishkillinghydroelectricallypoweredtoxicbatterycontainingstopgapmeasurecough* vehicle, you are out-"green"ing them for a fraction of the cost.
Possibly this upsets them at a deep, sub-conscious level; for, like most motorists, their car is deeply intwined with their ego and personal identity. By not hauling along a 2000 lb. metal cage whenever you leave the house, you challenge their sense of themselves as Earth saving crusaders, out-smugging every other non-hybrid vehicle on the road. And so, as an automatic defense mechanism to prevent the destabilization of the personality, the mind automatically removes you and all other transportation cyclists from the visual field before cognitive recognition. Maybe, anyway; it's just a hypothesis.