What is slot in dash for?

Got my New AT4 and learning all the bits and pieces and I find a slot in the dash to the left of the steering wheel that is not mentioned in

OMG! ABSOLUTE MEGA WIN! I KNEW IT WOULD HAPPEN! All Aboard Dynamite Dash Slot

dash long slot toaster I new buffalo dash for cash slot machine just landed at the Venetian casino in Las Vegas! Join

dashboard lampje auto met slot Slot Booking Slot booking for Citizens · MV Revision Additional Online Dashboard Provides details of transaction like Total