I've tracked my '14 MN6 Coupe. Road course. Here's a video where I was following a friend who had just got his own '14 MN6 Coupe. We don't go that fast, he didn't have a lot of experience and I didn't want to push him. But I had plenty of other laps that were fast (just not as interesting to watch). I love tracking the car. Much better than just mashing the gas and driving in a straight line for 11-12 seconds.
I do one fast lap at the end of the video. My time around the track was 2:03 and it's 2.3 miles so I was averaging about 67MPH. I only realized after I got home that I hadn't turned off Active Handling and that slowed me down a bit in the corners. I had an 02 Z06 with a Vortech supercharger I sold and the guy who bought it brought it to the track and insisted I take it around. I was substantially quicker in the Z, with an average speed around 83MPH. The Caddy is heavy. It's work to muscle it around the track quickly. The Z06 drove like it was a slot car. Kind of made me sad I'd sold it.
I would say, unless you have experience on the track, that you leave all the nannies enabled and you take it easy. Things can go wrong really quickly and if they do and you don't have the experience you won't react quick enough for a save. I actually advise all my friends to take a performance driving course. I did, many years ago, Skip Barber at Lime Rock. Didn't teach me anything I didn't know, but it gave me 3 days to practice in someone else's car and it was worth every penny.