(Editor's Note: This story has been updated to include clarifications from GM Defense.) WARREN, MI -- GM Defense hopes to offer the Army an Infantry Squad Vehicle engrained with drive-by-wire technology by the end of the year as the company sees a desire from the service to pull soldiers from the driver's seat. The prototype could be ready before Christmas, although that will depend on ongoing testing to make sure it “meets the mark,” JD Johnson, vice president of...