Japan's internet commerce and mobile games provider DeNA Co's Robot Shuttle, a driver-less, self driving bus, is seen during its demonstration in Tokyo, Japan July 7, 2016.

Robot Shuttle, a driver-less, self driving bus, developed by Japan's internet commerce and mobile games provider DeNA Co., drives past during an experimental trial with a self-driving bus in a community in Nishikata town, Tochigi Prefecture, Japan September 8, 2017. Picture taken September 8, 2017.

Japan's internet commerce and mobile games provider DeNA Co's Robot Shuttle, a driver-less, self driving bus, is seen during its demonstration in Tokyo, Japan July 7, 2016.

An employee of Japan's internet commerce and mobile games provider DeNA Co, rides on the company's Robot Shuttle, a driver-less, self driving bus, during its demonstration in Tokyo, Japan July 7, 2016.

The interior of Japan's internet commerce and mobile games provider DeNA Co's Robot Shuttle, a driver-less, self driving bus, is seen during its demonstration in Tokyo, Japan July 7, 2016.

Local residents are seen inside Robot Shuttle, a driver-less, self driving bus, developed by Japan's internet commerce and mobile games provider DeNA Co., during an experimental trial with a self-driving bus in a community in Nishikata town, Tochigi Prefecture, Japan September 8, 2017. Picture taken September 8, 2017.

Japan's internet commerce and mobile games provider DeNA Co's Robot Shuttle, a driver-less, self driving bus, is seen during its demonstration in Tokyo, Japan July 7, 2016. Image used for illustrative purposes

Local residents get off from Robot Shuttle, a driver-less, self driving bus, developed by Japan's internet commerce and mobile games provider DeNA Co., during an experimental trial with a self-driving bus in a community in Nishikata town, Tochigi Prefecture, Japan September 8, 2017. Picture taken September 8, 2017.

The logo of Japan's internet commerce and mobile games provider DeNA Co's Robot Shuttle, a driver-less, self driving bus, is seen during its demonstration in Tokyo, Japan July 7, 2016.

Robot Shuttle, a driver-less, self driving bus, developed by Japan's internet commerce and mobile games provider DeNA Co., drives past between rice stalk during an experimental trial with a self-driving bus in a community in Nishikata town, Tochigi Prefecture, Japan September 8, 2017. Picture taken September 8, 2017.

Image used for illustrative purpose. The interior of Japan's internet commerce and mobile games provider DeNA Co's Robot Shuttle, a driver-less, self driving bus, is seen during its demonstration in Tokyo.

Local residents get off from Robot Shuttle, a driver-less, self driving bus, developed by Japan's internet commerce and mobile games provider DeNA Co., during an experimental trial with a self-driving bus in a community in Nishikata town, Tochigi Prefecture, Japan September 8, 2017. Picture taken September 8, 2017.