For those having second thoughts because you might "destroy" your car on the track, it's very hard to do so unless you completely miss a gear or don't know what the brakes are.
Just know your car's weak points and bring some necessary equipment or spares.
There's a large variety of vehicles that go, like a Focus ST behind me, and FRS in front.
My first group even had a Porsche Macan, so there is absolutely no reason not to bring your /insertsportscarhere along. I encourage everyone to come to the next one, it's a blast and I love putting names to faces also!