The 1999 Xantia test was almost certainly not set up according to the norm. They tried to replicate the result with 3 different cars - with more grippy modern tires even - and the best they could do was 73km/h:
In any case, the Moose test has questionable validity to begin with and suspension is not necessarily the most important factor to navigating it at high speed.
In any case, the Moose test has questionable validity to begin with and suspension is not necessarily the most important factor to navigating it at high speed.