Complex sentence: There are many photos of half open limousines and saloons in the book "The Complete Encyclopedia of Motorcars: 1885 to the Present" by Georgano which prove that, but cars which are called sedans are always fully closed.
Split into simpler sentences: There are many photos of half open limousines and saloons in the book "The Complete Encyclopedia of Motorcars: 1885 to the Present" by Georgano which proof that. But cars which are called sedans are always fully closed.