McLaren needs Compaq laptops with bespoke CA cards to maintain the remaining F1s
Don't single out McLaren.  Countless much more important systems can only be accessed through ancient tech.  The Stealth bomber (the b-2) is a product of the same technological era as the F1.  Would anyone here be surprised if the new ran a story about them being grounded because that one last laptop capable of talking to their systems finally gave up the DOS ghost?