When the FIA mob were officiating technical scrutineers in each of 1987 and 1988, they seemed to be interested in measuring race car dimensions with representative road cars. From memory it meant a quorum of road going Ford Sierras, and a large number of HSV TWR VL Group A Commodores were unofficially barred from the circuit, lest the cars get measured..
Now to do that with a CYAN, a road going version might need to actually exist…