Alternative Fuels Available in Tucson
One of the fascinating things about Arizona is that they let people using Alternative fuels drive in the carpool lane by themselves. They also have other incentives for using alternative fuels. What trip wouldn't be complete without visiting the local biodiesel/E85 station!
Arizona Petroleum has E85 and Biodiesel available.
Don't know their website, but they can be found on Biodiesel.org Here:
Biodiesel.org - Distributors Arizona