I guess I'm spoiled by the well-interconnected transit systems in many international cities; step off the (high-speed) intercity rail and downstairs into the core of a robust subway system, or walk to the bus terminal next door.
San Francisco once had such an intermodal transit hub in the Transbay Terminal; the city is seeking $2.5 Billion to rebuild it.
Until then, we'll have to rely on private transportation like the 'dollar cabs' described in the article, or San Francisco's very own Lyft and Uber.