FILE PHOTO: A train of the Yurikamome line, a driverless automatic train system, runs with the city skyline in the background, in Tokyo, Japan, April 21, 2021. REUTERS/Kim Kyung-Hoon/File Photo
FILE PHOTO: A train of the Yurikamome line, a driverless automatic train system, runs with the city skyline in the background, in Tokyo, Japan, April 21, 2021. REUTERS/Kim Kyung-Hoon/File Photo