[ComplexSystems]

The reason I think this is a bad idea is that it lulls you into a false sense of security. The article makes recommendations that seem thorough and sensible - keyword "seem" - but, as mentioned elsewhere here, there are other potential hidden sources of telemetry (in CarPlay and Android Auto), and who knows what else.

For this kind of thing to succeed as a general lifestyle, you would need to invest an enormous amount of time making potentially irreversible modifications to all kinds of electronic equipment - only to be virtually guaranteed to miss something.

Do this kind of thing if you want, but don't be fooled into thinking you're actually solving the problem for real.

[mmooss]

I think you can substantially reduce the information collected about you, without an enormous amount of time. Security - and any solution - isn't about perfection; it's about improving the situation and making attacks more expensive.

Every HN thread is accompanied by comments saying it's all hopeless.

[ComplexSystems]

Sure, you can substantially reduce the information collected about you as long as you don't just give it away somewhere else instead.

[s3p]

If you disconnect the modem, the car can't share any information by itself. In my opinion, that is a huge win.

[egorfine]

There is no way to know for sure that this data is not collected somewhere inside the car and then uploaded at dealer's.