The Lionel #11-6007-1 Union Pacific (yellow) Proto-Sound 2.0 is a model locomotive that is powered by an internal combustion engine. It features light and sound functions, representing the Union Pacific Railroad in a vibrant yellow color. Released in 2009, this O gauge locomotive is in brand new condition, making it a highly desirable addition to any model railroad collection. Perfect for collectors and enthusiasts alike, this locomotive offers a realistic and immersive experience for those who appreciate the beauty of model railroads.