How do autonomous trucks “see” the world?

We’ll call a human a truck driver after he or she completes a two-week training program, yet it takes tens of millions of miles and billions of dollars before we turn a computer loose at the controls of that same vehicle. Is driving a much more complex task than we imagine, or are computers just slow learners?

https://www.truckinginfo.com/10166957/how-do-autonomous-trucks-see-the-world