Carpooling

Definition

"Rideshares or Ride sharing or Carpooling (not to be confused with CarSharing) is simply people cosolidating automobile trips by riding in one car, usually using a message board either real or online. This differs from hitchhiking in that the people involved coordinate the ride before-hand agreeing when and where to meet and how to share the costs. Ridesharing is safe and both cheaper and more environmentally friendly than riding alone. Rideshares are most practical on trips between large cities." (http://wiki.couchsurfing.com/en/Rideshares)