Couple of other things to consider regrading Tesla. The Loonie has fallen off of late so if, hypothetically speaking, they were to make an offer of say $1B Cdna that would only be about $900M US - nice difference.
Second, because of the Gigafactory tax setup and the fact that Tesla is years away from churning real taxable income - there would effectively be no tax paybale on Albany "profits" or 'cost savings' if one prefers.
Compare this to a miner who has Canadian operations - taxed at say 30% and pays for the property in Cdn Dollars.
Just another couple of things to consider..