wtf ?

Notification issued 02/13/12 at 6:50 AM. Due to a misplaced tractor-trailer, a short-term full closure is in effect for the southbound FDR Drive at E 96th St, Manhattan. Consider alternate routes.

The sender provided the following contact information.
   Sender's Name: Notify NYC
   Sender's Email: notifynyc@oem.nyc.gov

Exactly how do you misplace a fricken tractor-trailer? Something's not right there.