most of the comments i see on non-bike forums by four wheel drivers are negative towards cyclist. fact. which reflects on these drivers' thinking and actions. i'm wary of every car i see coming up behind me. i (try to) keep an eye out for all of them with my take-a-look mirror on my glasses and can see their lane position in relation to my line. i also ride where it's not isolated and there are witnesses so as to try and not let anyone get away with anything.