Part Two opens by conceding the series' strongest objection: Marin County's Sausalito lost all its passenger rail between 1937 and 1941, fifteen years before the Interstate Highway Act, to a bridge. A public body that had opened the Golden Gate Bridge wanted the ferries and trains gone and got its way. What 1956 added was not the idea but the money.
The 1929 Mount Tamalpais fire is often blamed for the mountain railway's end, but the local historical society attributes it to automobile competition. The twenty thousand fares a day figure is a best case; roughly ten thousand individuals is the defensible reading.