Since you edited to add a section of the terms:

All that section says is you have to explicitly cancel the service yourself. Selling the vehicle you use the service in and not using it via another vehicle/device doesn’t cancel the service for you.

This is so you can’t sell the vehicle then, 6 months later when you realize you’ve still been paying for a subscription, demand a refund for the service you didn’t/couldn’t use anymore but hadn’t actually cancelled.

There’s nothing nefarious here.