This is a 2017 update to my last reveiw. Took a trip to from Louisville, Ky to Niagara Falls, New York and back ... no problems. Supercharger stations along the Interstate's spaced about 120 to 150 miles apart (stopped at each one to see how easy they were to get to and use going to, on the way back only stopped twice using both Google and Garmin navigation app's. - no problems); adaptive cruise control and autopilot worked perfectly; the ride was comfortable, but firm, i.e., just right for my taste. Computer updates and downloads executed flawlessly. Well pleased, very well pleased indeed. Traded in a '09 CTS-V. Very similar in handling and performance ... S probably a bit faster. But, with much better mpg and silently sucks the headlights off the competition. Love the body style and British Racing Green W/Grey Nappa leather interior color too. Now that we have a Supercharger in Louisville, Ky. The title of my review needs to be changed to FREE Green Lightning. Autopilot, parking, and summon updates work as good, or better, (once you learn how to use them) as advertised.
