Sun Valley legal secretary James Eric Freedner got fed up with high gasoline prices.
He put his 2003 Toyota Tacoma truck in the garage and switched to a Honda Nighthawk motorcycle for weekday commutes to Beverly Hills. He stopped driving to the beach on weekends and cut back on trips to Hanford and Fresno to check on properties he manages. He began grouping errands into one trip each Saturday.
The trade-offs Freedner has made in the last year haven't necessarily made him happy, but they've reduced his gasoline consumption nearly 50%. And although he admits to feeling jittery traveling freeways on the Nighthawk, all the changes are permanent, unless gas returns to $2.50 a gallon.
"The price was just eating up what I earned," said Freedner, 57. "This is the best thing I can do to make ends meet."
Americans are getting serious about using less gasoline, confounding some economists who have argued that most people can't reduce their driving much because they have to get to and from work and make those necessary trips such as shopping and chauffeuring their children around.
The truth is more complicated, according to some energy experts: When the price reaches a certain threshold or the driving reaches a peak point of aggravation, people are willing to give up personal space and independence.
"There is an awful lot of what might be called discretionary driving," said Edward Leamer, an economist with the UCLA Anderson Forecast. "Raise the price high enough, and you will see that there is a lot more that people can do."
For some, the next drop in prices won't be enough to send them back to their old driving habits.
"The trend will be toward more lasting conservation and longer-term savings if they are not just reacting to prices and have instead made a decision to change," said Bruce Bullock, executive director of the Maguire Energy Institute at Southern Methodist University's Cox School of Business in Dallas.
In California, the nation's biggest fuel market, drivers have been burning through less gasoline than they had the year before for six straight quarters. From July through September, the most recent data available, Californians used 46.2 million fewer gallons, or 1.1% less than in the year-earlier period.
Consider ridership figures for the Bay Area Rapid Transit system.
For seven years, nothing was able to displace Oct. 4, 2000, when the San Francisco Giants and Oakland Athletics baseball teams were gunning for a pennant. BART set a single-day ridership record with 374,900 passengers.
That peak was eclipsed in 2007, and has been beaten so often that it no longer ranks among the top 10 ridership days. The new record, 389,400, was set Aug. 31.
Ridership on the buses and trains run by the Los Angeles County Metropolitan Transportation Authority dropped overall in 2007, but officials said that was the result of a fare increase in July. Before that, boardings had been on the rise.
The MTA's Orange Line has seen daily ridership grow from just under 15,500 in 2005 to nearly 21,500 last year.
In its annual state of the region report, released in December, the Southern California Assn. of Governments noted that the share of commuters who drove alone had dropped in 2005 and 2006, from 76.7% to 74.1%, reversing steady increases from 2000 through 2004.
With gasoline prices doubling since 2003, motorists nationwide are conserving fuel by taking fewer trips, driving slower and paying premiums for the most fuel-efficient vehicles, the Congressional Budget Office said in a recent report.
Kimra Haskell, a mathematics professor at USC, began bicycling to work six months ago.
She had many reasons. Sometimes she felt a shooting pain in her driving leg. She wanted to make a statement about the Iraq war and U.S. dependence on foreign oil. The California lifestyle of driving everywhere for everything -- even to exercise at a gym -- had left her too dependent on her aging 1993 Honda Accord.
She made her trial run from Eagle Rock to USC on a clunky, old Schwinn mountain bike. On the return trip of the 26-mile ride, uphill, she was ready to abandon the bike by the side of the road. But she persevered, bought a sleek, Italian Bianchi Volpe bicycle and is building up to cycling to work five days a week.
Gas prices were only part of the story, Haskell, 43, said. "It was mainly the effects on my health, on the time it took out of my life, the stress of dealing with the traffic."
Antipollution regulations are altering habits, too. California's air-quality rules demand that employers with 250 or more workers takes steps to reach a 1.5-1 passenger-vehicle ratio, or about 34 cars for every 50 employees.
At the Jet Propulsion Laboratory in La Canada Flintridge, there are perks for ride sharing. About 8,000 full-time and contract employees work on a campus with only 4,000 parking spaces, said John Miranda, JPL's employee transportation coordinator.