Summary: Most of our days are filled with routine and pass by in an indiscriminate blur. Just a few days in a lifetime are remembered by the date, minute-to-minute, from beginning to end. Weddings, the birth of children, the deaths of loved ones, major news events. Add one very unusual day to my list: April 30, 2018. The day my Chronicle colleague Peter Hartlaub and I attempted to ride every Muni line — bus, train, streetcar and cable car — in one day.
