Shitty napkin math says china is saving about $1-$1.5B, so I agree, I'm not seeing the needle more here. What _does_ make sense is that this agreement will continue to evolve over time. What _doesn't_ make sense is the 10-40% battery capacity loss because of temperature, for EVs in canada. I think newer EVs manage temperature issues like this better than older models, but I am unfamiliar with chinese EVs so I can't speak to them.
Where would China be getting savings, here? Unless they are also dropping some tariffs? Canada lowering tariffs saves Canadians money.