Let's continue torturing the poor car. It'd be great if it works that way, but what I fears is when the AI chauffeur decide on a route that appears to go where

Let's continue torturing the poor car. It'd be great if it works that way, but what I fears is when the AI chauffeur decide on a route that appears to go where I want, but instead it's a dead end, and you don't know the exact intersection for the correct path. Or it take a long sinuous dirt road ignoring the highway. Or it sends me off a cliff because it assumes it's piloting a plane. To manage those risks, you have to keep your hand on the steering wheel and know the route beforehand. In this case, I would prefer a GPS map and have something that is a bit less fragile. I don't mind writing code, and if it become boilerplatey, it's a good time to rethink those abstractions or write a few functions. And there's snippets for shorter sections.