They might still have a lead in battery tech. For instance, suppose Chevy needs to go through this retooling at some point in the future and set back productio

They might still have a lead in battery tech. For instance, suppose Chevy needs to go through this retooling at some point in the future and set back production at that point. A set back is not proof that they don't have a lead in battery tech. However, it should be asked: what is the nature of the lead? What is superior about the batteries? How does this lead manifest?