Being in Canada, I was struck by the news that GM intends to shut down their Oshawa plant by the end of 2019. I've had three cars out of that plant, including my current Impala 2LTZ. But looking at the bigger news, it seems that Oshawa is only one of a few casualties. Lordstown is closing, and so is Hamtramck. The latter really struck me - isn't that the only other plant building Impalas? Is this the end of the road?