Yeah, these surveys done by non-cyclists never ask the right questions. The person who set up the survey is asking what they're curious about, not realizing that they're missing the meat of the situation, so what they have is pretty irrelevant.
With that said, I commuted 25 miles each way for school in 1982, and it took me consistently an hour and ten minutes, with panniers for clothes and books. If the freeways parallelling the bike trail were clogged up, the bike could actually be faster than the freeway. Health requires exercise anyway, so even if it takes a little longer than a car, it's a savings of time to not have to take the exercise time out of an additional part of your schedule. As far as riding in town with traffic lights and all on the boulevards though, I used to tell people when they thought it was too slow, "If you can get there in 15 minutes in a car, chances are it will take me 18 on my bike-- not much difference." I do fine in fast, heavy boulevard traffic (I can go 0-30mph in just a few seconds), and I don't need bike lanes, although I do want the right lane to be wide enough for cars to safely pass me in the same lane. The problem with many bike lanes is that they're just the door-opening zone for the parked cars, so you have to ride on the left line of the bike lane, or even avoid it altogether. There are plenty of good web pages about this sort of thing. I work at home now, so I don't commute per se, by any means of transportation.