Seattle alternative fuels pioneer Dan Freeman, who has sold biodiesel for six years from his Ballard auto shop under the Dr. Dan nom de guerre, unveiled Friday the second location of what he hopes will be a growing empire.

The pump, located at Espresso Express on 65th Street and 15th Avenue NE, north of the University District, was set up with the help of a federal grant to develop biodiesel stations in the Puget Sound area. Freeman said he'd like to open two more locations of "Dr. Dan's Biodiesel" in the Puget Sound area within six months.

Freeman claims the Seattle area has one of the highest concentrations of biodiesel users in the country. The fuel -- which can be used in diesel engines -- has certainly gotten a push from high oil prices, environmental concerns and the unpopularity of Middle Eastern military operations with some voters.

"Not having to rely on foreign oil is a big thing," said Harry Sanders, a biodiesel user who was present at the inauguration.