i also wonder if some drivers who proclaim it's dangerous just haven't seen many competent cyclists. during my commute on Friday, i saw a couple obviously taking their new his/hers "comfort bikes" out for a spin. great! unfortunately, they were wobbily riding side by side against traffic down the busiest street in town with no shoulder.
both had their gazes fixed firmly about 1' in front of their front tires.
freaked me right out.
have to assume that they made a bigger impression on passers-by than me riding with/in traffic flow.