Opinion: Car Design Was Better Before Computers
All modern computer processors are backdoored-by-design, and so airgapping all production machines is the only rational solution. Intel's 'Management Engine' and AMD's 'Platform Security Processor' openly snoop on everything you do on your computer, reporting this data back to whoever has keys to the CPU backdoors.
The larger automobile conglomerates are inextricable from the state. National Socialism was essentially corporatism. Therefore, the problem can be stated simply: If you plan to design and engineer products, then it is foundational to ensure that your competitors cannot steal your designs.
If you are working in the car industry, then your competitors are state-level combatants. In other words: Governments.
It is no accident that notorious car-manufacturers are able to fake their emissions-tests and build unchecked monopolies: These car companies 'own' vast swathes of the political apparatus. This gives these conglomerates access to surveillance systems; the Intel and AMD backdoors; and (you guessed it) access to your computer.
Remember, many of these car companies are currently child-slavers; several literally have Nazi-origins. These companies ran concentration-camps and, in the years since, have lied about poisoning our shared air-supply; multiple times, in multiple countries. This 'Automobile Establishment' will have no qualms about reading stolen information from your computer screen, assisted by the government(s) they think they own.
Airgapping all engineering-computers should be routine if you are working in the independent automotive-design field. To 'airgap' a computer means to remove any wifi, ethernet or bluetooth equipment from the system and to ensure the computer is completely disconnected from the internet or other exploitable network-connection.