We have been casting streetcar parts for the California based company TIG/m. They are the only company in the world using hydrogen fuel cells to power their cars. Here is a short video about the company.
Look closely for the step supports we sand cast in aluminum and the bronze handles and other details throughout the car that were cast using the lost wax process. These rough castings are shipped to their factory where they are finished and installed.
Visit their web page to see more of their process and where these streetcars are going.