toyota has a couple (but I’m not sure if they are available in the US)

then I really hope they cancell it because prior art clearly exists

after 30 years shouldn’t the patent have expired?

it’s not that it cannot be done. the issue is that something as simple as acceding a service should not require to configure wire guard and routing rules. plenty of FOSS projects are safe to expose through a simple reverse proxy

and then you are giving access to your lan to people whose computer you don’t control and might be full of malware.