When purchasing a truck most peoples number one concern is durability. They purchase a truck for toughness and its ability to handle any job or situation put in front of it. Well Hugh and Tammy Pennington got just what they were hoping for when they purchased their 2006 Chevy Silverado 3500 HD. They have taken their Duramax over one million miles and its still going strong. Check out the video provided by General Motors YouTube channel.