Everything you need to know about California’s new HOV stickers

Traffic at the I-10 & I-405 interchange in Los Angeles, California (by Mario Roberto Duran Ortiz)If you’re more than a little confused by California’s rules allowing clean cars into the much-prized diamond lanes, join the club. The state DMV and the California Air Resources Board haven’t done a great job of clarifying matters, either, though they’re getting better. Things will come to a head in the new year with a new...