The San Francisco subway runs off of 5-inch floppy disks. https://sfstandard.com/2023/02/02/sfs-market-street-subway-runs-on-reagan-era-floppy-disks/ https://s

The San Francisco subway runs off of 5-inch floppy disks. https://sfstandard.com/2023/02/02/sfs-market-street-subway-runs-on-reagan-era-floppy-disks/ https://sfstandard.com/2023/02/02/sfs-market-street-subway-r... That article links to an (only slightly older) article about British Airways loading navigation updates every month off of the fancy new 3.5-inch floppy disks.