A driverless vehicle runs on a road during a driverless vehicle winter challenge competition at a forest park in Changchun, northeast China's Jilin Province, Jan. 12, 2021. The competition kicked off here on Tuesday, aiming to check the performance of those driverless vehicles under harsh weather in winter. (Xinhua/Zhang Nan)

A driverless vehicle runs on a road during a driverless vehicle winter challenge competition at a forest park in Changchun, northeast China's Jilin Province, Jan. 12, 2021. The competition kicked off here on Tuesday, aiming to check the performance of those driverless vehicles under harsh weather in winter. (Xinhua/Zhang Nan)

Driverless vehicles are seen during a driverless vehicle winter challenge competition at a forest park in Changchun, northeast China's Jilin Province, Jan. 12, 2021. The competition kicked off here on Tuesday, aiming to check the performance of those driverless vehicles under harsh weather in winter. (Xinhua/Zhang Nan)

A driverless vehicle runs on a road during a driverless vehicle winter challenge competition at a forest park in Changchun, northeast China's Jilin Province, Jan. 12, 2021. The competition kicked off here on Tuesday, aiming to check the performance of those driverless vehicles under harsh weather in winter. (Xinhua/Zhang Nan)

A staff member tests his company's driverless vehicle before a driverless vehicle winter challenge competition at a forest park in Changchun, northeast China's Jilin Province, Jan. 12, 2021. The competition kicked off here on Tuesday, aiming to check the performance of those driverless vehicles under harsh weather in winter. (Xinhua/Zhang Nan)

A driverless vehicle runs on a road during a driverless vehicle winter challenge competition at a forest park in Changchun, northeast China's Jilin Province, Jan. 12, 2021. The competition kicked off here on Tuesday, aiming to check the performance of those driverless vehicles under harsh weather in winter. (Xinhua/Zhang Nan)

People take photos of a driverless vehicle during a driverless vehicle winter challenge competition at a forest park in Changchun, northeast China's Jilin Province, Jan. 12, 2021. The competition kicked off here on Tuesday, aiming to check the performance of those driverless vehicles under harsh weather in winter. (Xinhua/Zhang Nan)