I just returned from a 3,000 mile road trip through the U.S. driving on mainly interstate highways. This is my first vehicle with SCC (smart cruise control) and LKA (lane keeping assist). I must say these 2 features are game changers for me. They took away most of the tedium that comes with a long trip. I didn’t have to pay as much strict attention to driving with the SCC keeping a safe distance from vehicles ahead (even if they stopped) and LKA doing most of the steering. Yes, I had to keep my hands on the wheel but it was way more relaxed. I was way less fatigued after a 9 hour day of driving. I found the seat and ride very comfortable. I averaged 28 mpg doing 75 mph most of the time. The Santa Fe is a keeper!