AirTrain JFK

The computerized trains are automated and operate without conductors or motormen
https://en.wikipedia.org/wiki/AirTrain_JFK

There are lots of automated railways worldwide

https://en.wikipedia.org/wiki/List_of_automated_urban_metro_subway_systems

including in North America...

Airport Transit System at O'Hare International Airport in Chicago, Illinois - VAL system.

AirTrain at San Francisco International Airport in San Francisco, California

Detroit People Mover in Detroit, Michigan

JTA Skyway in Jacksonville, Florida

TPA Monorail at Tampa International Airport in Tampa, Florida

ExpressTram at Detroit Metropolitan Wayne County Airport in Romulus, Michigan

AirTrain JFK in Jamaica, New York

AeroTrain at Washington Dulles International Airport in Sterling, Virginia

ATL Skytrain at Hartsfield–Jackson Atlanta International Airport in Atlanta, Georgia

The Plane Train at Hartsfield–Jackson Atlanta International Airport in Atlanta, Georgia

Metromover in Miami, Florida

Morgantown Personal Rapid Transit in Morgantown, West Virginia

Las Vegas Monorail in Las Vegas, Nevada

Denver International Airport Automated Guideway Transit System at
Denver International Airport in Denver, Colorado

Satellite Transit System at Seattle–Tacoma International Airport in SeaTac, Washington

SkyTrain in Vancouver, British Columbia — the longest driverless network in North America.

LINK Train at Toronto Pearson International Airport in Toronto, Ontario

Tes yeux noirs-

Thank you.

I did not notice an operator on the PATH trains that run from Newark to New York City. I guess I am wrong.

what could possibly go wrong??