This argument doesn't really make sense. The "expectation of privacy" in public doesn't refer to losing all your rights and letting anyone peek into anything when they want to. Vehicles can also be used on private roads or property, so the privacy invading tech would need to account for that (which I'm sure it doesn't, and there isn't a straightforward solution)
There's the way my e-bike works ; The electric assistance is supposed to be limited to 25km/h, you can opt to disable this through clicking a few buttons in an app for most brands, and use your vehicle on private roads only.
Then it relies on enforcement to catch you operating an illegal vehicle on a public road
Unlike e-bikes, your vehicle has a plate, so needless to say, if you get caught speeding on a public road by a camera and your vehicle was registered as having had the thing turned off at the time in the database (i.e. it shouldn't be on a public road), you could imagine getting an additional charge similar to operating a vehicle without a license plate or operating something that's not road-legal.
