what happens when all driving jobs on earth go away permanently?

There are 3.5 driving jobs in the U.S. right now. I actually think it is more than this if we are realistic.

And this is just the U.S. which is only 6% of the world's population.

so, maybe if we create a ratio if I did this right it is 434 million drivers on earth which is also the most amount of jobs for men on earth more than any other job.

So, this century it is possible that ALL these jobs are going to go away and replaced by self driving cars and truck and Semis.

So, what happens when 434 million men have nothing to do?

Do they retrain?

Do they and their families starve to death?

Or are both of these things true for some of them?