oh yeah i learned along time ago. ALWAYS assume drivers cant see you. even if they can , and ride super defensively ... ive been hit 2 times in my life, once when i was 11 ,just riding around, not paying attention, and again 2 summers ago... the most recent one is cause the guy wanted to hit me ... road rage incident basically ... nothing i could do to avoid it .... but i have avoided 100's of other possible incidents by anticipating what drivers might do, riding defensively, and assuming they cant see me... just yesterday i was riding on the shoulder with a guy in a convertible on my left... traffic and me cruising along about 20 mph ...... im keeping up wit him... he looks at me and smirks.... it was right then i knew he was going to cut in front of me to either make a turn or just overtake the lane and pass cars and sure enough he did ... but i was able to break before he did ... if i wasnt paying attention i woulda ran into him .....