There is still no evidence of any public transportation as the minutes pass. I have to leave now. In the American city of San Francisco, I find myself twitchily clicking my phone while perched on the edge of a curb and gazing down Market Street. As the minutes pass, I wince.
Suddenly, though, the traffic diverges. On the horizon, a faint bell sounds. My rescuer, a 1928 wood-paneled tram with green and white trim, then rumbles up the Market Street rail line.
The first business to be granted permission for the trial program was Cruise, a division of the US auto industry behemoth General Motors. The second was Waymo, a division of Alphabet Inc., the same business that owns Google, which received approval just last month.