FBI Washington
The FBI Washington is a modified Washington for the FBI in Grand Theft Auto: Vice City.
The FBI also drive the larger, heavier FBI Rancher, and leave the FBI Washington parked behind a music store in Downtown. You can start Vigilante missions in this car, and it has a siren. It is more stable than the Police Car in the game, which has a tendency to roll on the slightest grade.
Interestingly, the FBI Washington has puncture-proof tires which cannot be damaged by gunfire or spike strips. Besides the Rhino, it is the only vehicle in the game known to possess such a capability.