The term 'Luxurious Train Car' can be summarized by the crossword solution of 'PULLMAN'. PULLMAN was a company founded in 1867 by George PULLMAN, an American inventor and industrialist. The company specialized in the manufacturing of luxury railroad cars, which were known for their comfort and style. These cars were used by many of the world's most famous travelers, including presidents, royalty, and celebrities. The PULLMAN cars were considered to be the epitome of luxury train travel, and they remain a symbol of opulence and sophistication today.