[citation][nom]u-nip[/nom]wow, this costs even more than gas. I mean $.90/halfhour+imcreases? imagine how much that would cost if you're working 8 hours straight. The exercise is good though[/citation]
Not really. The point would be to rent one for the way to work (or whatever your destination), park it with other rent-a-bikes for someone else to use, and then rent a different bike for the way home.
So you only have the bike for the duration of a one way trip each way, not the total time from when you leave home to when you get back.