We have a lot of bike lockers here at work but I only see a handful of people who use them. I do see a fair number of people riding in before and after work, but it's a small town and short distances so it's a little easier. Even in winter, there's always a few who make me feel bad when I do drive.
You can ID the hardcore ones in the winter when they're walking out of the buildings by the bumblebee outfit of yellow jacket and black pants. I always think to myself: "They're out there."