For 10 weeks Tom Weis has been pedaling through country roads talking to people about climate change and renewable energy. His trip took him from Boulder, Colo. to Washington, D.C. He made a stop at the Green Commuter in Takoma Park Friday afternoon.

With six weeks of pedaling and a total of four weeks of downtime, Weis covered 2,500 miles. Almost all of those miles were pedaled, save for the 100 miles he was propelled by an electric car in Springfield, Ill., that Weis described as a cross between a DeLorean and the Batmobile.

Weis is calling for a modern green energy moonshot. He wants the United States to run on 100 percent renewable fuel by 2020. And he thinks the goal is entirely possible.

"During World War II we revamped the whole economy on a dime," he said. "Why can't we do that now?"