>>>>Interesting, but it doesn't correlate with the fact that we can't get people to drive school busses or drive long haul tractors.
>>
>>Sure you can. Increase the pay by $10K. Still no takers? Repeat. Eventually you'll have all the bus drivers you need.
>
>Nope. You will have self-driving busses sooner.

Actually you'd have a cheaper solution - concatenated trailers with a single engine, just two persons staffing a dozen or six dozen of them, going off roads but on prebuilt special paths so no traffic problem either; these could reach the big warehouses directly (via tunnels or various kinds of ducts)... IOW they'd have to reinvent railway.