40 million Californians ordered to stay home to halt virus

A few cars head south to cross from San Diego into Tijuana, Mexico, through what is normally one of the world's busiest land border crossings, (AP Photo/Gregory Bull)

The check-in line for British Airways is empty at the Los Angeles International Airport . (AP Photo/Marcio Jose Sanchez)

A sign outside the concession area at the Paramount Drive-In Theatres limits the number of customers who can be served inside due to coronavirus concerns, Thursday, March 19, 2020, in Paramount, Calif. . (AP Photo/Chris Pizzello)

San Franciscoís Embarcadero Center, typically bustling during the work week, is seen empty during the mandatory shelter-in-place order in San Francisco, Calif.  (REUTERS/Kate Munsch)

People exercise on the beach during the global outbreak of coronavirus disease (COVID-19) in Santa Monica, Calif. (REUTERS/Lucy Nicholson)

A surfer and jogger make their way along the bike path in the dog beach area of Huntington Breach, Calif. (AP Photo/Chris Carlson)

An empty wine tasting room is seen, prior to California's Governor Gavin Newsom's effective immediately statewide "stay at home orderî, in the face of the fast-spreading pandemic coronavirus (COVID-19), at the HALL Family Wines, which has closed for tasting, in St. Helena, Calif. (REUTERS/Shannon Stapleton)

Cars arrive at the entrance to the Paramount Drive-In Theatres, Thursday, March 19, 2020, in Paramount, Calif. (AP Photo/Chris Pizzello)

Viewers in parked cars watch the animated film "Onward" at the Paramount Drive-In Theatres, Thursday, March 19, 2020, in Paramount, Calif. The drive-in theater, long a dwindling nostalgia act in a multiplex world, is experiencing a momentary return to prominence. With nearly all of the nation’s movie theaters shuttered due to the pandemic, some drive-in owners think they’re in a unique position to give moviegoers a chance to do something out of the house but stay within prudent distance from one another. (AP Photo/Chris Pizzello)

Viewers in a parked car watch the animated film "Onward" at the Paramount Drive-In Theatres, Thursday, March 19, 2020, in Paramount, Calif. (AP Photo/Chris Pizzello)

A Napa Valley welcome sign sits next to a vineyard, prior to California's Governor Gavin Newsom's effective immediately statewide "stay at home orderî, in the face of the fast-spreading pandemic coronavirus (COVID-19), outside of Napa, Calif. (. REUTERS/Shannon Stapleton -)

Andrea Wyatt of Inglewood, Calif., wears a mask as she collects her concessions at the Paramount Drive-In Theatres. (AP Photo/Chris Pizzello)

Darren Kurkowski, vice president of operations for the Paramount Drive-In Theatres, looks out over the property from his office, Thursday, March 19, 2020, in Paramount, Calif. The drive-in theater, long a dwindling nostalgia act in a multiplex world, is experiencing a momentary return to prominence. With nearly all of the nation’s movie theaters shuttered due to the pandemic, some drive-in owners think they’re in a unique position to give moviegoers a chance to do something out of the house but stay within prudent distance from one another. (AP Photo/Chris Pizzello)