Just finished my very first LONG trip. 1,943 miles, 2 National Parks, 1 KY state park, 1 TN state Park and 1 GA state park. TV is a 2006 GMC Denaili Crew Cab and went from 15.4 mpg to 11.3 mpg....hate to get that gas card statement, but it was worth it!..Great weather and good times. Now I have...