There's a group in central Indiana that is working to restore trolley cars to operating condition - the Hoosier Heartland Trolley Co. Website is https://www.hoosiertrolley.org/
They are hosting an open house on October 28 (sadly, I can't go) and they will be demonstrating the progress on their current project. See https://www.hoosiertrolley.org...0/28/2023-open-house - be sure to watch the video about the restoration of Union Traction #429.