My colleague and I shared a rental car and he drove us to the airport. We always drive through a tunnel on the way there and today I finally checked out the San Francisco map to pin down the location of the tunnel. It’s the upper deck of the Yerba Buena Island Tunnel, in fact. Yerba Buena is named for an abundant plant in the area, an alternative name for hierba buena, literally meaning “good herb” in Spanish.
