SFO at 1500'

I took Ruth and Esther on a bay tour. It was the first time I flew out of San Carlos and with WFVC. I flew up the bayshore freeway, right past SFO and over the san bruno hill to SF. From SQL, the tower handed me off to SFO tower that cleared by through Bravo space at 1500'. It was neat flying so low and close to a major airport. I've been told that in some cases they let you fly right over the SFO runways.