(puffs chest and prepares trumpet for blowing)
In a past life I had cause to know the identity of "Stig".
A rather heated discussion was held with the producer, which ended when I put my foot down and pointed out that I was legally required to document the actual identity of everybody involved, including the person wearing the white safety equipment.
After all sorts of assurances about respecting privacy I was told, "today it's..........."
There is a popular theory that "Stig" is several people. One principal, with others brought in on an as-needs basis. My experience leads me to agree with this concept.
As mentioned by roaldin, one of the best ideas ever.
The best part of the Australian show was the appearance of "Stig" at the logies (think Emmys or BAFTAs) when "Stig" arrived on the red carpet and marched strode inside, ignoring the assorted journos and knobs by going straight up the middle and never breaking stride.