Vehicle Telemetry. Make the vehicle store all telemetry and diagnostics to non obfuscated plain text on a thumb drive. Give me incentive to drop it off at a dealership in exchange for a new thumb drive that may include firmware/OS updates that I could optionally install while they observe the output. That would open up the option for me to buy a vehicle newer than 2008.
Incentives for me could be: Extending warranty as a baseline feature, free basic vehicle maintenance and cleaning service, free low glucose donuts and good coffee.
Incentives to them could be: The option to try to up-sell things to me. If EV, option to upgrade battery pack, electric motors, infotainment system, etc... If ICE, upgraded intake manifold, better injectors, coils and plugs, options for differential gear ratios, law enforcement transmission shift kit, computer mods for performance and fuel efficiency options, etc... Their lobbyists could allow their customers to skirt or bend the line of legality.
