Do you use Volgistics or a similar scheduling program? If so, you could create a "Car Pools" Assignment and post the name and location/date/time of a person seeking to carpool. Others could monitor that page and sign up as they would to register to volunteer under your volunteering Assignments.
I haven't done it yet, but have considered creating a "Meetup" style Assignment on Volgistics where volunteers looking for people to socialize with can find each other. I find one of the motivators for volunteering is to meet other people with similar interests. Since most of our volunteer positions are singular, this might help fill that need.
Perahps a similar tactic would work for carpooling.
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Nancy Schomburg
Manager, Volunteer Services
Grounds for Sculpture
Hamilton NJ
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