OAKLAND, Calif. --
by John Boitnott, Web Producer

Oakland Mayor Ron Dellums and San Francisco Mayor Gavin Newsom traveled around California Wednesday in a biodiesel bus in support of Hillary Clinton's presidential campaign.

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Both men made a stop in Oakland at Merritt College to talk about Clinton's economic stimulus package.

Los Angeles Mayor Antonio Villaraigosa and Fullerton Mayor Sharon Quirk were on board as well.

All the mayors praised Clinton for her proposals involving green-collar job training.

In both Southern and Northern California companies have begun to sprout up that focus on solar, thermal and wind energy. Each mayor has expressed their approval for programs that would train former blue-collar workers for jobs in such companies.

"(Hillary Clinton) understands the importance of taking those ideals and working together to really make progress and sustainable change," Newsom said. "Nowhere is it more important though, than in making sure that those who have been locked out of the industrial economy are locked into this green economy. We're all lamenting the loss of blue collar jobs and here we are talking about this green wave, and locking folks into this green, sustainable economy."

Quirk also praised green-collar training programs.

"As an educator, every day I see families in my class who are dealing with the economic impact, homes that they're losing, Not having healthcare," said Quirk, who has taught in her city for more than 20 years. "These kinds of issues are real, they're significant, and we as educators see them everyday in our classroom. It's important to me that we have a leader in our country who is going to make specific recommendations -- bring $5 billion to the green-collar training program."

The mayors were also scheduled to stop in Sacramento to discuss home foreclosures.

After that, the mayors will drive south to Los Angeles for an event in East L.A. at 5 p.m.

"I'm very proud and very confident that Hillary Clinton will win here in California and very proud of the fact that she appears to continue to maintain a very strong lead in this state," said Newsom "I think that's because she understands the needs of the state. As she is out here even more in the next week or so that she's going to continue to maintain that lead."

While the mayors joined the town hall meeting in Oakland, they left their biodiesel bus in idle.

Four limousines trailed the bus on its journey throughout the state, according to NBC11 videographer Walter Colby.