A motorcyclist rides between lanes as traffic backs up on U.S. 101 in Mill Valley, Calif., in 2011. A report released Thursday, Oct., 28, 2016, estimates that petroleum-based fuels cost California about $15 billion a year.
A motorcyclist rides between lanes as traffic backs up on U.S. 101 in Mill Valley, Calif., in 2011. A report released Thursday, Oct., 28, 2016, estimates that petroleum-based fuels cost California about $15 billion a year. Associated Press file
A motorcyclist rides between lanes as traffic backs up on U.S. 101 in Mill Valley, Calif., in 2011. A report released Thursday, Oct., 28, 2016, estimates that petroleum-based fuels cost California about $15 billion a year. Associated Press file