Its like that video I posted -- if transportation becomes automated - and there are a lot of drivers for why it will and should be, its going to kill 20% of the work force right there. The invention of the automobile put the buggy whip manufacturer out of business, but not the guy who used to hold the whip. The robots are going to put massive of numbers of people out of work. . Of course it will probably make a lot of goods cheaper - transportation is a large part of the cost of anything now.
I bet job sharing becomes more commonplace - especially since Obamacare is driving that anyway. Lots of part time work with no benefits, and no full time jobs. Better learn to survive on half your current income..