* Limousines are typically modified vehicles: Most limousines are created by taking a standard car (like a Cadillac, Lincoln, or even a minivan) and stretching the chassis, adding doors, and modifying the interior.
* Many companies specialize in limousine conversions: Companies like Superior Coach, Executive Coach Builders, Imperial Limousine, and American Coachworks specialize in stretching and modifying existing vehicles into limousines.
* Luxury car brands often offer limousine versions: Some luxury car brands like Mercedes-Benz, BMW, Rolls-Royce, and Bentley offer stretched versions of their vehicles, but these are typically considered luxury sedans with extended wheelbases rather than true limousines.
So, the answer depends on what you mean by "limousine cars." If you're asking who makes the base vehicles that are often converted into limousines, it's a wide range of car manufacturers. If you're asking who modifies vehicles into limousines, there are many specialized companies that do just that.
