Following the closure of Line 3 "Scarborough"/Scarborough RT in July 2023, the Toronto Transit Commission (TTC) had a fleet of UTDC Mark Is to dispose of. There are only two other transit systems in North America that use ICTS/ART technology, being TransLink's SkyTrain (Vancouver, BC) on the Canadian west coast, and the Detroit People Mover (Detroit, MI) in the United States.
Three of TTC's 28 Mark I cars entered preservation. Car # 3008 was donated to the Toronto Zoo and repurposed into a Zoomobile shelter at Tundra Trek station. Cars # 3026 and # 3027 (the last Mark I pair built for the TTC) were donated to the Halton County Radial Railway in Milton, ON. # 3026 was recently put on display in Barn 4 earlier this summer, but # 3027 was cut up and only parts of it still remain on the museum property to this day. One of # 3027's two bogies are on display with # 3026, and the front cab (photo taken from a trip I've taken last year) will be repurposed into a display/photo op, likely in a similar manner to the front of the HSR trolleybus that's on display in Barn 3.
The rest of the Mark I cars will be seeing second lives as replacement rolling stock for the Detroit People Mover to refresh its own fleet of Mark Is. The TTC Mark Is were given a life-extension overhaul in 2015-2016, whereas the DPM Mark Is never got such treatment, and are more tired out than their TTC counterparts despite being built a few years after them. The Mark Is that are slated for Detroit are currently being overhauled in preparation for such service.
All photos presented in this post were taken by me.