The product of American scrap and Atlantean ingenuity, the Sub-Mariner created his jeep out of scrap parts in Salt Lake City, Utah to try and ferret out Nazi agents who might want to steal such a technological marvel. Driving it around attracted just such attention, and after a group of Nazi spies briefly stole the device, Namor reclaimed it and smash their operation, leaving them to be apprehended by the authorities.
Driving across the country in the jeep, Namor used it to drive to the state of Oregon and to the home of Professor Dorn, a mad scientist, and later drove escaped mental patient Mona Lake to the authorities after Dorn's demise. Later, Namor left his jeep, then nicknamed his "Blitz-Buggy", with the authorities in a small Oregon town while he returned to Atlantis.
The "Blitz-Buggy" has since seemingly been abandoned by Namor, and who currently possesses it remains unrevealed.
The "Blitz-Buggy" could attain speeds after than military jeeps that were constructed in the 1940's (The average US military armored vehicle of that size range topped speeds between 40-56 MPH), the upper range of which is unknown. The side mounted rails on the vehicle could allow the jeep to glide in the air for a number of meters provided the jeep attained sufficient speed and carried itself off a sufficient ramp. The wheels were shaped in such a way to allow the vehicle to bound over bumpy terrain.