A long car is a type of vehicle that is usually longer than a standard car. The term 'long car' can refer to a variety of vehicles, such as limousines, stretch limousines, and luxury sedans. The four-letter crossword solution for the term 'long car' is LIMO, which is short for limousine. Limousines are typically used for special occasions, such as weddings, proms, and other formal events. They are often associated with luxury and wealth, as they are typically more expensive than regular cars.