Twenty or so years ago the TTC still had PCC street cars running in regular service. I seem to remember a story that they had renovated the old cars at a cost of $450k a piece (cheaper than the $1.25 million for the new models) in the late 1980s. They seemed to disappear from the streets pretty quick after that. I figured this was one of those disposed cars. A quick search revealed the true (somewhat convoluted) story. I would guess that this location was an abandoned plan for a farm stand.
To see PCC cars running- or ride on one, the TTC has retained two units (#4500 and 4549) that appear occasionally on the Harbourfront route and the Halton County Radial Railway museum also has a number of them.