We already have houses that talk to each other, why not cars now?
Why not smart grid everything until we're living in an all-EMF, low-powered microwave oven being subtly mentally impaired by pervasive pulsing, modulated radio frequencies and spatially impaired by letting cars think and drive for you.
Heck, if the statistics of when I take a shower, for how long, and how much water I've used doing it is being pinged in real time throughout every other utility-serviced building in the municipality, then what trouble is this?