What happens if a driver has to go to their backup car before race day?

If a driver has to go to their backup car before race day, it means that their primary car was either damaged or deemed unfit to race. The driver and their team will have to quickly transition to preparing and setting up the backup car for the race. This may involve adjusting the seat, pedals, and other settings to match the driver's preferences, as well as ensuring that the backup car is in proper working condition and meets all the necessary race regulations. The driver may also have to get accustomed to the handling and performance of the backup car during practice sessions before the race. Ultimately, the goal is to ensure that the driver is comfortable and competitive in the backup car come race day.