I can just see someone restoring a 2020 Tesla in 30 years...Tesla then tunnels in and disables the unauthorized car.
I'm betting a low mileage 2020 model year Tesla will have some collector value in 20 years. A KIA sorento, probably not.
One thing I've noticed withthe old Dodge farm truck is that if its a popular model the aftermarket will jump in with support. I can buy just about anything for that 98 dodge ram.