Yep. I was competing in what's called VMAX - top speed racing - and it was really reaching the limits of aerodynamics at 230 and above. Other people using these cars end up building full aero for them however I pivoted to lower speed things with it.
I've been campaigning the car for about a decade though, fantastic machine.
Very cool. Be careful! I've had a 'Copen', that was the most fun I ever had in a car, it is even lighter than the MX5 (but not as light as a souped up classic Mini (the only real mini imho)).