The drone assembly line.
If a citizen wants regular mail it will have to be addressed to a privately held tractor trailer where shipments come in every day and are ready for pickup.
You can have that Hurricane Sandy feeling all the time.
When the people are replaced by machines, then the Republicans will complain the government can't possibly afford Medicare, Medicaid, SSI or Food Stamps.
And the Bubble and Bust economy will overtake any profit structure and the entire mess will be worse than the Great Depression.
See, when this mess actually happens in the USA, China can forget about exports because the people that purchase their products at Walmart won't have money to do so anymore.