I would not go as far as you did for $6/day but if possible I would go as far as Carol, since I have 2 bikes, but biking it 70 miles a day is just not going to happen
The cool thing about biking is that it doesn't have to be door to door. I'm starting by driving to a spot a few miles away from the office, and then biking the rest of the way. I'll then gradually increase the distance as I get stronger.
I don't think I will ever bike door-to-door. In addition to the distance involved, the road that my complex is on is a very fast highway and not at all bike-friendly. But if I can ever get to the point where I can bike from the trail to my office (and back...) a few days a week, I will be very happy