GLENVILLE, N.Y. — On sagging train tracks in an industrial park sit four rusting passenger trains, once the cornerstone of an ambitious plan to create a high-speed rail line between New York City and Albany.

But the necessary track improvements never happened. Trains that the state paid $70 million to refurbish did not work. Then the state accused Amtrak of stealing several of them by towing them to Delaware and never bringing them back.

Four trains remain as monuments to the disastrous project. For years, the state paid more than $150,000 annually to rent a space to house the trains in Glenville, as well as a warehouse for spare parts in a Rotterdam industrial park.

“This is New York State’s $70 million train to nowhere,” said Howard B. Glaser, the director of state operations, who called the abandoned trains a glaring example of “waste and incompetence.”