I certainly loved the design of the CERV III. Some of the tech was a little pie in the sky and probably could have been eliminated for a less pricey production car.
The dual discs at each wheel would have been heavy and hurt handling. Today's larger tires and wheels allow single larger discs that probably would have stopped the car as well.
That was also a showcase for their first active suspension. It's cost and weight led to today's Magnetic suspension.
Imagine the CERV III sitting in your garage today, with today's tech in it. WOW.