I just found out that my university is getting a car share program through Enterprise: Enterprise CarShare - Explore our Car Sharing Programs It looks pretty reasonable: $35 for an annual membership and $7.50/hour includes gas and insurance.
This could be a really good thing: some of my co-workers and students are tired of dealing with their old cars, and are interested in going car-free (possibly because they see that I ride my bike everywhere and nothing bad has happened.) I think the three months of extreme cold are a deterrent for many people - not everybody enjoys suiting up and riding or walking around in temperatures below 0F, and I wouldn't recommend icebiking to a novice rider.
Have any other car-free folks used a program like this? I'm thinking of joining just to have another Plan B, but (personally) I can't see using it very often.