I genuinely do not believe a 2025 car will usable on the road in 2035 (a mere 9 years), yet known 15 or 20 years from now. They are all too hamstrung by technology and whilst some of the technology is an improvement, a vast majority if malicious.
If it is you'll probably be forced to pay a monthly subscription
• Anything you do through the Bluelink app.
• Automatic calling for help after a collision, enhanced roadside assistance (sends GPS coordinates to help center so you don't have to know where you are to get help), and features to track and immobilize stolen vehicles.
• The navigation system loses access to live traffic data and live routing (routing the frequently checks with a server to update routes based on live and historical traffic patterns). Local search also degrades or maybe goes away.
• OTA updates for the navigation system. If you want to update its maps and databases you can download the update from their site to a thumb drive, and then install it via that.
What keeps working:
• All the driver assist and driving safety features like adaptive cruise control, lane finding/keeping, cross traffic warnings, and similar.
• CarPlay and Android Auto.
• The radio in the infotainment system. You can connect your phone via Bluetooth or USB (without using CarPlay or Android Auto) to stream music and handle phone calls.