@MTL_HABS1909, Tax is collected by government at time of car registration and can be traceable back to purchaser. For OTA update upgrades and T-shirts the tax is collected by Tesla and settled with government each quarter and these purchases are not traceable by government back to the purchaser.
In 2013 Tesla sold a Model S version a 60kWh locked battery to a limit of 40kWh, with purchaser ability to upgrate to the 60kWh at a later date. Tesla also unlocked higher range batteries temporarily during huricane Dorian and the California wildfires. We know this can be done with a simple OTA upgrade.
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I do not think for a second that Tesla would built their most current popular model with a 94 mile (151km) battery back with no chance of upgrading range, when Elon made decisions to stop producing the Model Y because <250 miles was "unacceptably low".
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The 94 mile (151km) Range has yet to be delivered in Canada, it was only just now made available as an option. Time will tell however I expect battery pack to be upgradeable for this model. If this was never the intent of Tesla to upgrade, and if battery cells are the limiting production factor, Tesla would not make a larger locked battery pack (waste of cells never to be used) and can make almost three times the number of Model 3s with the same number of cells by going with a 151km, battery pack (Standard + is 423km Range), however as Elon has clearly stated, this would be unacceptable.
My last post on this topic. This forum deserves better than us bickering back and forth.