The Post reports:

Metro and 30 other transit agencies across the country may have to pay billions of dollars to large banks as years-old financing deals unravel, potentially hurting service for millions of bus and train riders, transit officials said yesterday.

The problems are an unexpected consequence of the credit crisis, triggered indirectly by the collapse of American International Group, the insurance giant that U.S. taxpayers recently rescued from bankruptcy, officials said.

AIG had guaranteed deals between transit agencies and banks under which the banks made upfront payments that the agencies agreed to repay over time. But AIG’s financial problems have invalidated the company’s guarantees, putting the deals in technical default and allowing the banks to ask for all their money at once.

In Metro’s case, the regional transit agency could face up to $400 million in payments, the system’s chief financial officer, Carol Kissal, said in an interview yesterday. One bank, KBC Group of Belgium, has told Metro that it needs to pay $43 million by next week. Metro officials confirmed the details but declined to name the bank.

One might ask just what the hell was the point of giving AIG government credit worth $122 billion (and counting) if it wasn’t going to prevent the deals the firm guaranteed from falling apart. Go read the Post story; it will disgust you seventeen ways fron Sunday.