You are correct Murray. Over the years, our engineering firm worked on some Mobil Oil interests projects here in Alberta. In 1999, Mobil and Exxon merged, and in 2012, Exxon/Mobil quietly acquired Imperial Oil over the years and by 2012 they found themselves owning about 70% of the company. The rest of the story is very convoluted as are many oil companies and their holdings. Imperial owns a pretty good chunk of the Alberta Oil Sands and a chunk of Syncrude as well.
But I doubt you will see any Mobil Oil Gas Stations in the near future in Canada. They have been quite regimented in preserving the Esso name for the gas stations in this country and being content with opening the many Mobil Lube facilities we are seeing pop up. There are a number of Mobil gas stations in California and a few around the Great Lakes area of the US but other that those and the Mobil gas name in Australia, the rest of the gasoline in pretty much retailed through the Esso name.
I have a very good childhood friend who just recently retired from a Chief Engineer Position with Exxon/Mobil so have heard lots about the company.... and not all good....lol....