Ya. I watched the Doug Ford announcement, and he said parts can cross the Ontario border up to 8 times before making it into the vehicle or final product.

so $10 part -> $12.50 -> $15.625 -> $19.531 -> $24.414 -> $30.517 -> $38.146 -> $47.683 -> $59.60

So that $10 part from the first factory is now $59.60 and that's before the fact that it probably increases in value at each step along the way to being refined into it's final product.

Thats why he's saying (as well as others) that they expect the factories on both sides to shut down within a couple weeks.

Edit: half of that if it's a one way tariff where both sides didn't put tariffs on the exact same items.

yeah, exactly. Complex manufacturing chains often ship things all over the place, if you're crossing the border 2-3 times, that's 2-3 times as many tariffs being charged. Which depending on what you're doing, can be a lot of money.

The auto industry in particular is susceptible to this.