I work 13hrs a day, from 5pm to 6am, 4on 4off. So if I work M-T-W-Th I get off F-Sa-Su-M and work again T-W-Th-F and so on, it's a good deal.
I used to see no one on the 5 miles of street riding I do and only two or three people per week on the 5 miles of bike path (10 miles total) and they didn't seem to be commuters, all decked out in road riding gear etc, though I'm not trying to judge them, I just didn't see them every day.
In the last 3 weeks I have seen one person though every so often and he is definately commuting. Bright clothing, messenger bag, trunk rack, lights. I'll be heading east on the metro parkway bike path and he'll be heading north on Garfield road and we'll cross paths every so often at 6:30am. One day I'll have to stop and have a cup of joe with him.