I disagree with the definitions put forward for "limousine". A limousine is merely a sedan that is separated into two compartments: one for the chauffeur and one for the passengers; length does not come into the equation. Cadillac made for many years the Fleetwood 75 SEDAN (no division) and the Fleetwood 75 LIMOUSINE (with division); both cars look the same on the outside. You need to keep a category for sedans (any length) and another for limousines (even short ones, like the mentioned Daimler).