"Greaseball Challenge is a charity biofuel car rally from the US to Central America on a shoestring budget. To preserve this ethos, there are a few simple rules:

1.) Teams must find a vehicle on a shoestring budget.
2.) Teams are on their own – unsupported for the duration of the rally!
3.) Vehicles are powered using alternative fuels – biodiesel, vegetable oil, waste grease, or any renewable fuel source.
4.) All vehicles are donated in the destination countries to benefit local environmental projects.
5.) Greaseballers will source their fuel from a number of greasestops on the road: biodiesel producers, diners, fast-food outlets, supermarkets, factories, and farms. The possibilities are endless, and rather daunting. It’s a challenge."

http://www.greaseballrally.com/challenge.htm

What: 3rd Annual Biodiesel Forum

When: Saturday March 19th

Where: Phinney Ridge Neighborhood Center (lower parking lot and community hall auditorium) - 6532 Phinney Ave. N, Seattle WA 98103

How much: Free! (donations accepted)

More info here:

http://www.nwbiodiesel.org/default.aspx/NorthwestBio...

From their web site: "The Northwest Biodiesel Network, a public group founded in 2003, is comprised of consumers, distributors, producers, and others interested in promoting biodiesel in the Pacific Northwest."

What: Annual Greasel Gathering

When: July 22, 23, 24, 2005

Where: Drury, Missouri at the Greasel facilities

Event page: http://greasel.com/Events.html

Contact info: http://greasel.com/Contact.html

How much: Free! :)