Anyone remember the WW2 song with lyrics: Goodbye, mama. I'm off to Yokohama for the red, white, and blue, my country and you? Nissan and DeNA plan to test an autonomous-driving taxi soon to be roaming the streets of the busy, heavily populated city.

The plan, called Easy Ride, is to have the vehicles fully functioning throughout Japan by the 2020 Tokyo Olympics. They’ll be booked and operated with Smartphone and other computer-hailing and ride-control systems. So, mama, if you’re inattentive while crossing the street in Yokohama, don’t become a traffic drama!