I have been thinking of a module that could be created on Drupal to promote car sharing, or car pooling. Unfortunately, I don't have the time to complete it, at least for this year, so I thought I would throw in a project proposal.
The basic background idea would be something along the lines of the module being used by a website that has a number of participants who travel to the same destination. Examples are universities, colleges, workplaces. Even better examples would be music festivals.
The website would require people who sign up to create an account with their location. It could get them to pinpoint their location on a map, or select a town. The users could then socially interact with other people who live in the same are and are attending the same location, in order to arrange a car share.
I think this module could be potentially huge, if you can develop it and get places like music festivals involved so that they encourage attendees to share transport. With growing awareness of the carbon-footprint of travelers to large events, it would be a great tool to promote green-transport.
What does everyone think, or is there already a module that kind of does this? I would be happy to consider being a mentor for this, although I have no previous experience!