we tend to drive our 37' DP at between 62 - 64. it is just a comfortable speed for the bus towing the jeep... most interstates we encounter range from 55 to 70 mph speed limit...we stay in the right lane, try to be courteous, and mind our own business.... I would rather spend the entire trip surrounded by semi's and buses than one small car......I'm always extra alert approaching on-ramps, as most people don't seem to look, they never see the Jeep, and they expect you to yield to them......or they pull 40 feet in front of you at 30mph when you are doing 60........my grandson calls them speedbumps..........