There is no cosmic law about 120 km/h. It is a human artefact, and is not absolute - to suggest it is as
@genetic does (he does not admit of exceptions) is to make a category error. The last time I was copped at around 160-170 km/h on a public road, the cops jumped in their car and escorted me to the hospital. We hit 180 km/h at times, on the road between Clarens and Bethlehem. I could have gione faster (and had on clear sections), but the cop car couldn't keep up. I was transporting a farm labourer who had been bitten by a rinkhals. He needed urgent medical attention. He was lying on the back seat of the Audi 2.4. He lived. I was not fined or locked up, as
@genetic said I would be.