Nissan Motor Company recently took automotive journalists on a tour of its Decherd Powertrain Plant in Decherd, Tenn., in conjunction with its media launch of the TITAN XD V-8 gasoline model. The Decherd Powertrain Plant produces more than 1 million engines for nine of the OEM's models it sells in the U.S., in addition to the Patrol, which is sold in Japan. Read our driving impressions here. Photos by Chris Wolski.