Believe it or not but I think it was the American imports - our dollar was strong against the USD during the 1970s and early 80s.
I didn't hear much about them from the late 90s onwards and only recently also discovered myself that they were still going.
I think their "hey day" was the 60s and 70s.
That doesn’t surprise me. There was a time when we had more European stuff and less US goods. We also had more Cdn made products as well. Our dollar was at par, and for a while it was worth a few cents more than the USD.