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The New Audi A3 Is Amess With In-Car Subscriptions
(www.motor1.com)
This is a most excellent place for technology news and articles.
Looks like all they do is: Music streaming directly from your infotainment ($15), live navigation + new voice commands + 24/7 agent in case you need support ($15), both above ($25, wow, such sale), and some AT&T specific bullshit where you can apparently make your car a hotspot ($25).
https://www.toyota.com/connected-services/
All in all, all of them useless, and absolutely not required. All of them are covered by having a phone with Android Auto or Apple CarPlay.
None of that is at all required, they include all the usual Apple/Google phone link systems so all of that is very easily ignored. The only real problem with Toyota is the DCM sim modem, which you can get removed, and their data collection which you can opt out of.