Knowledge, expierience and VERY carefull assembly.
and maybe a face face with an open mind reads the rules differently?
while you can't sabve weight a lighter frame means you can put the weight where you want it, and carbon is much stiffer, which gives a better "feel" from the track.
If you want a witness i agree totally! I was close enough to be in the photo too, and agree entirely, got quite hostile and intimidating towards the end.