[throwaway74432]

>SFMTA's train control system relies every morning on 5 inch floppy disks.

That's not the 3.5" floppy disk in the video. This is the old floppy disks[1]

1. https://www.digitaltreasures.ca/img/level2_floppy_525.jpg

[prewett]

And floppy floppies wasn't "cutting edge technology [in 1998]", either.

The OG floppy disks were 8 inches, though, 5 inch floppies were the small ones (hence why 3.5" disks were "microfloppies"):

https://images.techhive.com/images/article/2015/12/floppy_di...