While car makers resort to their own gas gimmicks to move outdated and inefficient stock, more and more bikes are rolling out of cycle shops from Bismarck to the Bay Area. Even those in the auto business are making the switch:

Mark Krenz, 48, is giving it a try. The Bismarck auto-parts store manager recently spent $750 on the 24-speed bike and is building up his mileage to prepare for his hilly commute.

"In this business, everybody is constantly talking about how to save gas," Krenz said. "I bought a bike because I figure it’s a good way to save money, get in shape and save wear and tear on my pickup."