Cadillac Escalade EXT
The Cadillac Escalade is a full-size luxury sport utility vehicle (SUV). It was the division's first major entry into the popular SUV market. The Escalade was introduced for the 1999 model year in response to German and Japanese competitors and to Ford's 1998 release of the Lincoln Navigator.
The Escalade EXT sport utility truck (released alongside its twin, the Chevrolet Avalanche) was introduced in 2002 from the Cadillac division of General Motors. It features a "Convert-a-Cab" composite pickup bed that can be expanded into the truck's cab through a bottom-hinged door. Like the Avalanche, the EXT has four full-size doors and seating for five. The EXT was only offered with the 6.0 L V8 High Output engine.
Source: Wikipedia, 2012