Green

For universities, workplaces, etc.

• AlterNetWays -- www.alternetrides.com
• www.Nuride.com
• www.rideshare.com
• www.zimride.com
• www.carpoolworld.com

For events, conferences, etc.

• www.spaceshare.com/upcoming
• www.alternetrides.com

From town to town:

• www.craigslist.com (choose "rideshare" under community)
• www.erideshare.com
• www.carpoolworld.com
• www.alternetrides.com

Cars by the Hour:

• www.zipcar.com
• www.carsharing.net