Looks like a great experience! I'd pay the money just to have Christian Fittipaldi drive me around, someone of his experience going much faster than I ever could in a supercar would beat any rollercoaster for me.
I've done a single seater driving experience day before, and they are a lot of fun. Blocking the speedometer out on these cars is a good idea, because it's all too easy for some people to forget that these sort of events are not a race, they are an experience, and one which regardless of how fast you go, you should get out of the car feeling great!
Well done to Elissa and Adam, and well done again to Elissa for not telling Christian to watch his speed!