There’s no need to host servers for 99% (maybe 100%) of this stuff. All the remote start features can be done through a direct connection between your phone and car. There’s no need for a third computer to be involved, except to check if you’ve paid for it. As long as your car has wifi access (or phone network access, which would need to be paid for) then it can communicate with other devices on the network/internet. Sure, you still have to pay for the internet, but that’s paid to the ISP, not the car company.