Just wanted to repost so that it would be embedded.
The first half of the video shows Nissan's durability team testing the Titan XD on Montana Mountain. This location is described as the "ideal location as the off-road terrain enables them to test the suspension, four-wheel drive system and cooling system all at once."
The second half of the video travels to Kingman, Arizona where the truck has is tested on a 6% grade road near the Davis Dam. "The combination of extreme heat, heavy loads and steep inclines prove to be crucial in testing the truck's ability to tow without problems."