It is not a correction, but additional context. Indeed Porsche cares about efficiency- but there are different ways to then leverage that efficiency- for either

It is not a correction, but additional context. Indeed Porsche cares about efficiency- but there are different ways to then leverage that efficiency- for either a more powerful car, or a more fuel efficient car. Porsche will choose the more powerful car, because they sell sports cars, not economy cars. Also see my other reply in this thread.