So, I found a great website on the history of SkyTrain technology. SkyTrain came to Vancouver as a result of the Ontario government of the 1970’s decision to step-up public transportation infrastructure in a big way. This company was called Urban Transportation Development Corporation (UTDC). Anyway, as a condition of federal funding for Vancouver’s rapid transit network in the 1980’s, we had to purchase UTDC equipment. (It was supposed to be conventional light rail.) In the 1986 UTDC was sold to Lavalin, who in 1991 sold it to Bombardier.
Transit Toronto has a page on the UTDC Kingston Transit Development Centre, where SkyTrain was invented. Here is a picture of the first SkyTrain car. There are more pictures on the page.