Japan will let driverless cars roam freely ahead of 2020 Olympics Japan will let driverless cars roam freely ahead of 2020 Olympics September 5, 2019 dzadmin Comments 0 Comment As many as 100 self-driving cars will ferry up to 7,000 passengers in the week starting July 6, with Toyota and Nissan participating. The trial is meant to showcase Japan’s strengths in the field.