Cars being online has some tangible benefits in that they can transmit location data to emergency services, especially if the driver is unresponsive. Might save someone from dying in a ditch in the middle of nowhere.
Arguably, some of the data collected while driving is also very useful for maintenance and development (e.g. if a lot of vehicles start having a similar issue after X miles).
That said, this data should be limited in scope and use (e.g. must not be sold, especially not to insurance companies), as well as anonymized as much as possible. Which is currently not the case, and that definitely needs regulation.
Basically me every time I open a website on my work laptop, where I cannot add browser extensions because of IT policies.
I honestly cannot fathom why large companies don’t include at least simple adblockers in their browser configurations. I don’t even need to block youtube ads, the banners on stackoverflow are bass enough). Would probably save fairly significant amounts of bandwidth, too.