Do you remember the Fuller Brush Man, the Avon lady, the encyclopedia sales person and the telephone operator? Millions of people once held these jobs. Now none or nearly none do. People still use brushes, make-up, organized information and telephones as much as before. Companies still offer these products and services. Technology changed the nature of the products and made the middle-man unnecessary.
So, if the products and services still exist and consumers buy more of them than ever before, what became of the sales people and laborers who were once essential but are now gone? Do you see Fuller Brush Man retirement homes? Do you see people on street corners with signs saying "Help a former Avon lady?" Do you see government-funded homes for former encyclopedia sales people? Do you see telephone operator poor houses? Where did these people go? Was the loss of their jobs the end of their stories?
The demise of the family farm and the closure of factories as jobs moved to low-labor-cost countries also put millions of people out of work, often abruptly. (Advances in logistics that helped make this possible include the rise of expediting.) Yet food sales have not declined. More people drive more cars than ever before. In many cases, the production and consumption of products continues but the methods change.
It's not easy and seldom instant but the majority of people find ways to adapt. As it is in other industries, so too will it be in trucking when robots replace human drivers and warehouse workers, and truck stop waitresses find themselves with no humans to serve.