What is a "car dealer" on a steam railroad in 1910 Illinois (E St Louis, St Clair County, IL)
In the 1910 census for E St Louis in St Clair County, I have a couple of siblings living together.
Jacob lists his occupation as a brakeman for a steam railroad
John lists his occupation as a car dealer for a steam railroad. He is a laborer on the railroad in 1900, and died in 1917 so no further clues from any other censuses.
A search of "car dealer for a steam railroad in 1910" turned up nothing meaningful.