I tell people that driving a truck is like trying to concentrate on balancing a basketball on the end of a pen for hours. It's a tough thankless job. You keep it moving despite the weather, stupid people in the cars around you and perpetually changing road conditions. Primitives wouldn't be able to deal with it
Among the many things my Dad (and his brother and business partner) did as a farmer was dumping the combine into flatbed trucks onto which they had installed sides with unloading gates and hydraulic lifts to allow dumping.
They installed, the trucks were mid 1940s and late 1930s vintage. Anyway, they then drove their loaded trucks to their dryer and their empty trucks back to the field. Even as a kid under age 10 it was really clear to me that driving those trucks - small compared to a multi-trailer semi - was very demanding, and car drivers could be a PITA (it being a rural area, few were ... most had similar experience).
Too many DUmmies have very narrow life experiences and pontificate about things of which they are abjectly ignorant.