My BS meter goes off as I read this story.

"Google maps does not have turn by turn... How do we fix it? I know! Let's build our own maps from scratch to get this vital feature in!"

Mind, you, this is not a simple thing to write. This is a major, major, multi-year undertaking that you do not embark upon lightly.

Makes no sense. But whatever... I'm not even an Apple user, so whatever.