OEM margins aren't great and their C suites are desperate to unlock any new revenue streams they can. This is inevitable, and it's a shame the nice thing we had is going away. The baller move would be for Apple to go buy an OEM and roll out a vehicle, but that seems to have stalled. It doesn't have to be self driving!
Car dealerships tend to be keystone businesses in towns; they wind up with outsized political power on the state and local level.