Not to belittle the remoteness of this road, but I just find it interesting that the farthest north point you can travel on a road in eastern Canada is further south than most of Sweden (not to mention Norway or Iceland, which also have very extensive road networks). Another reminder of how important the Gulf Stream is for the climate of Europe...
There's always so much room for pedantry with statements like that. If eastern Canada includes Labrador (which it generally does), the town of Nain (which is further north) has roads that people drive cars on: https://maps.app.goo.gl/b1saMzzXKDQrHZQy6
Nain isn't connected to the rest of Canada's road network though, so it depends if one really means something like:
"this is as far north as I can take a long road trip in eastern Canada" or "this is as far north as I can be in a car, on a road, in eastern Canada, even if it is just a 1km ride from the airport on one side of town to the hotel on the other"