San Francisco's picture-postcard suburb of Sausalito boasts a rare breed of American fauna: a small band of happy commuters. The reason is blue and white, cost $700,000 and floats. It is called the M.V. Golden Gate; and in the eleven months that it has been plying the waters of San Francisco Bay between Sausalito, in Marin County, and the city's Pier One, it has turned hundreds of auto-addicted commuters into confirmed ferry fans.
The trip is inexpensive500 each way. It is also quick: 30 minutes pier to pier, and the passengers step off virtually into the heart of San Francisco's business district....