Driverless 18-wheelers are on a few highways, but widespread use is a long way down the road

Chaotic roads are still too difficult for automated trucks to navigate.

無人駕駛卡車已在得州和加州的有限路段測試，模擬顯示其可提升安全、降低油耗並緩解司機短缺。但雨雪天氣、施工路段和復雜城市交通仍是難以克服的障礙，作者認為未來多年內人機協作仍是更現實的方向。