I know there are some Germans on Tildes, figure at least one of y’all might know. How does a typical Autobahn differ from a typical Interstate in design and construction? How often is repair work done and how long does it last? What work would be required to upgrade an Interstate to Autobahn standards?

I'm really not sure if I posted this in the right place, but I have been watching the Youtube channel "The B1M" and the guy's other channel "Tomorrow's Build" and I really like his type of content. I've also been watching tv shows about homes and the types of people who live in what homes in which parts of the country (Denmark). I also watched a couple of episodes of "The World's Most Extraordinary Homes" on Netflix...

So yeah, I obviously really have an itching for more content along the lines of buildings and especially homes. So, does anyone have suggestion on what to watch next?