Finding a space at the supermarket car park

Went extra early to the supermarket this morning. If we go after 9.30am, the car park is full and it takes forever to find a spot. It never used to be like this and at first I thought it must have been because some supermarkets are still closed for earthquake repairs. But if this were the case, then the supermarket would be similarly crowded but it’s not. Just the usual number of people there. So my theory is that no-one wants to use the underground car park.