[1] Many of the O4's mechanical components originated from the Opel Astra, a German small family car.
The roof featured twin targa tops made of carbon fiber that could be stowed behind the rear passenger seats.
Media and other information such as movies, maps, and telephone numbers were able to be stored and displayed via Sony memory stick.
Just weeks before the O4's unveiling, General Motors announced its phasing out of the Oldsmobile brand.
By the time of the O4's unveiling, the O4 was called the GM O4, with the "Oldsmobile" marque removed.