You're not even close to a realistic comparison. As a percentage of jobs overall, people working with horses, milkmen, switchboard operators, etc didn't amount to the sheer enormity of the jobs that will be obsoleted or displaced by self driving vehicles.
There is no comparison in history to make. Nothing has happened like this before. Never.
The closest you could get would be something like the aftermath of WW2 in Europe or maybe some devastating plagues but even that isn't a good comparison because those removed the people entirely; dead people don't need to be fed or swayed from starting a violent revolution.
It's not just the truckers or cab/bus drivers. It's all the industries that support them. Those will disappear too.
Just think of all the truck stops we have in the US and the amount of money that truckers spend at these places to sleep, take showers, get wifi, etc. Those will go away too.
The motels where travelers sleep at midway points in their travels will lose all that business. The auto body shops that rely on people making mistakes while driving will lose all that business too.
You're vastly underestimating the disruption if you're bringing up switchboard operators and milkmen.