The driverless taxi era has finally arrived, in parts of Arizona, at least. Two weeks after Alphabet-owned Waymo started its driverless taxi service to the public in Phoenix, other autonomous vehicle developers are following suit with test vehicles on public roads as well. Until spring this year, Waymo's self-driving vehicles were in their testing phase and were used in up to 10% of the firm's rides. The pandemic forced the company to shutter its doors and temporarily suspend on-road testing, but it is now back online and is expanding its operations. However, as is still required by law, the Waymo One taxi currently requires a human driver to be present to manage the car's autonomous operation and take control when necessary.