Re: F1 and customs
I wrote all the assembler code for the Acteltime (the small white timing computer), made the timing beams, in-car telemetry for Arrows (Eddie Cheever and Derek Warwick were the first to use it) and all the ancillaries.
Your probable employer was sponsored by TAG and because of that was the only team I didn't supply.
If you went to the tests, then you would find Dougie (Arrows), Simon (Williams), etc. with their timing beams and computers set up around the track somewhere. Exit of the Parabolica at Monza for instance.