@swope @ai6yr @msbellows all cars built after mid 1990s generally have /some/ kind of computer (ECU) in them, but those before 2010 often lack touchscreen infotainment that goes wrong, and before 2020 rarely have security locked components, so there's a lot of affordable aftermarket diagnostic kit.

Manufacturers worldwide have got a lot better locking down access to newer cars (they have literal DRM in the components, you need a per-use token for some levels of access for many, and the Central/Eastern European folk who were previously able to crack these things are now increasingly tasked with building drones for both sides of a full on war (and people who used to work together on this are now mortal enemies)