Visitors wearing face masks to protect against the coronavirus look at Tesla vehicles on display at the China International Fair for Trade in Services (CIFTIS) in Beijing, Saturday, Sept. 5, 2020. Auto executives are flying in early to wait out a coronavirus quarantine ahead of the Beijing auto show, the year's biggest sales event for a global industry that is struggling with tumbling sales and layoffs. Organizers say they will impose intensive anti-disease controls on crowds and monitor visitors and employees for signs of infection. (AP Photo/Mark Schiefelbein)

Cars are delivered for the upcoming Auto China 2020 show in Beijing on Thursday, Sept. 24, 2020. Auto executives are flying in early to wait out a coronavirus quarantine ahead of the Beijing auto show, the year's biggest sales event for a global industry that is struggling with tumbling sales and layoffs. (AP Photo/Ng Han Guan)

A worker labors on Thursday, Sept. 24, 2020, near a sign which reads "Hi Beijing, Auto China 2020" ahead of the Auto China 2020 show to be held in Beijing. Auto executives are flying in early to wait out a coronavirus quarantine ahead of the Beijing auto show, the year's biggest sales event for a global industry that is struggling with tumbling sales and layoffs. (AP Photo/Ng Han Guan)

Visitors wearing face masks to protect against the coronavirus look at a Tesla vehicle on display at the China International Fair for Trade in Services (CIFTIS) in Beijing, Saturday, Sept. 5, 2020. Auto executives are flying in early to wait out a coronavirus quarantine ahead of the Beijing auto show, the year's biggest sales event for a global industry that is struggling with tumbling sales and layoffs. Organizers say they will impose intensive anti-disease controls on crowds and monitor visitors and employees for signs of infection. (AP Photo/Mark Schiefelbein)

Workers prepare Thursday, Sept. 24, 2020, for the upcoming Auto China 2020 show to be held in Beijing. Auto executives are flying in early to wait out a coronavirus quarantine ahead of the Beijing auto show, the year's biggest sales event for a global industry that is struggling with tumbling sales and layoffs. (AP Photo/Ng Han Guan)

A security guard wearing a mask walks past an advertisement for the Auto China 2020 show to be held in Beijing on Thursday, Sept. 24, 2020. Auto executives are flying in early to wait out a coronavirus quarantine ahead of the Beijing auto show, the year's biggest sales event for a global industry that is struggling with tumbling sales and layoffs. (AP Photo/Ng Han Guan)

Security guards wearing masks stand at the entrance to the showroom being prepared ahead of the Auto China 2020 show to be held in Beijing on Thursday, Sept. 24, 2020. Auto executives are flying in early to wait out a coronavirus quarantine ahead of the Beijing auto show, the year's biggest sales event for a global industry that is struggling with tumbling sales and layoffs. (AP Photo/Ng Han Guan)

Workers prepare for the upcoming Auto China 2020 show in Beijing on Thursday, Sept. 24, 2020. Auto executives are flying in early to wait out a coronavirus quarantine ahead of the Beijing auto show, the year's biggest sales event for a global industry that is struggling with tumbling sales and layoffs. (AP Photo/Ng Han Guan)

A worker looks out over an advertisement for the Auto China 2020 show to be held in Beijing on Thursday, Sept. 24, 2020. Auto executives are flying in early to wait out a coronavirus quarantine ahead of the Beijing auto show, the year's biggest sales event for a global industry that is struggling with tumbling sales and layoffs. (AP Photo/Ng Han Guan)

A worker passes by regulations to curb the spread of the coronavirus on Thursday, Sept. 24, 2020, aimed for attendees of the upcoming Auto China 2020 show to be held in Beijing. Auto executives are flying in early to wait out a coronavirus quarantine ahead of the Beijing auto show, the year's biggest sales event for a global industry that is struggling with tumbling sales and layoffs. (AP Photo/Ng Han Guan)