If you want to gauge the recent interest in developing autonomous trucks, follow the money.
Tech startups and established OEMs alike have since early 2019 announced billions of dollars of funding for autonomous vehicle initiatives. This March, even the Canadian Pension Plan (CPP) Investment Board was part of a $2.25-billion investment round in Waymo, the former Google self-driving car project that has expanded into trucking.
In other words, some of your retirement savings are banking that a future truck will perform selected driving tasks as well as you can. Maybe better.