Doora, a self-driving home delivery robot, is seen during a test run in Stockholm, Sweden, March 11, 2021. Swedish telecoms operator Tele2 and Q (quick) commerce provider Foodora announced on Thursday the test run of Doora, a self-driving home delivery robot. (Tele2/Handout via Xinhua)

Doora, a self-driving home delivery robot, is seen during a test run in Stockholm, Sweden, March 11, 2021. Swedish telecoms operator Tele2 and Q (quick) commerce provider Foodora announced on Thursday the test run of Doora, a self-driving home delivery robot. (Tele2/Handout via Xinhua)

Doora, a self-driving home delivery robot, is seen during a test run in Stockholm, Sweden, March 11, 2021. Swedish telecoms operator Tele2 and Q (quick) commerce provider Foodora announced on Thursday the test run of Doora, a self-driving home delivery robot. (Tele2/Handout via Xinhua)