If you hadn't posted today Sherrel, would never known of this thread. Your 4 wheel Tram (streetcar to you) reminds me of when I was 11 or 12 and my parents and I visited a town on the west coast of NZ's north island (Taranaki) called New Plymouth a couple of times for the Christmas holidays. We stayed at a beachside camping ground (Fitzroy beach). They had a tram system there that was mostly single track with passing sidings. Was great fun to ride in these little things as they sort of rocked and twisted their way along and groaned around the tight radius turnouts at the passing points (Y turnouts at each end). Here's a pic of them doing their passing dance.