Radiator Springs Racers was set to be down from January 16 to January 23. Today is January 24, the attraction still has walls up and remains closed.
Cast Members are not even stationed outside the attraction, and with its headliner closed, Cars Land is pretty empty in general.
The Disneyland App and website do indicate the attraction is closed today, but does have it listed as open tomorrow. Naturally we will keep our eyes out in the coming days as to whether Radiator Springs Racers does indeed reopen.