> what about all the new roads that perhaps will need to be built?
They'll be built by automated construction equipment, just like construction equipment has replaced bricklayers, and bulldozers & dump trucks have replaced men with pickaxes and wheelbarrows.
> engineers could make cars MUCH easier to work on
And then a robot can swap out the battery packs in 90 seconds, no human needed! The easier engineers make assembling and disassembling things, the less "human touch" is needed. If you look at companies bringing manufacturing jobs back from China, they're redesigning their products to be machine assemble-able.
I laughed out loud when he talked about food prep being an area "untouched" by automation. Dominoes, Quiznos, etc use an automated feed oven to cook pizza's & subs now. McDonalds has fry machines where you dump fries in the hopper and push a button- it dunks the fries in the oil, pulls them out when done, and dumps them into a hopper for boxing.
The only thing saving jobs from more automation is that the ROI on automation is less than continuing to hire people. As the cost of automation technology drops and the gets better, that ROI point will move.