I have a problem with the Sierra commercial,1st,I cant accept the premise of the pickup talking,"I vow this,I vow that",2nd,the statement that "I vow to take a tank of gas as far as it will go" is a meaningless statement,every car and truck takes a tank of gas as far as it will go!whether that is 200 miles or 600 miles,10mpg or 35 mpg!