An American Romance

I saw this movie as a kid of 10 in Port Arthur, Texas, which had four theaters in a four block area. I don't remember all the details, but it was definitely a feel-good film. The protagonist was an Eastern European immigrant whose name was long and hard to pronounce, so he was re-christened Steve Dangos. Steve first got a job iron ore in an "op'm pit". Being bright and ambitious, he later became an automobile manufacturer and, if the movie is to be believed, was the first to build an enclosed sedan. He was proud to be an American (this was at a point in World War II when the outcome was expected but not guaranteed) and he named his sons after Washington and Theodore Roosevelt. He had his share of sorrow when one of the sons was killed in World War I. This was not one of the all-time film classics, but it must have made a great impression on me for the basic plot to have stayed with me for all these 62 years.