While i dont necessarily agree with you, it is not my point. I am not saying we should limit the speed according to local speed limit, just that there is no reason ever for an individual car to go above 150kmh (or whatever the highest allowed speed in a country+15% is)

Speed limits are set according to a number of factor from noise, local crash history, density of pedestrians, threshold of the safety equipments (such as rails) , willingness of the governing body to review it, etc While some are not good, I would definetly argue that not all the reasons can be assessed from the driver perspective.

I really think you are missing the point here. You say overspeeding may save you, which i think is a very theorical and not frequent occurence but ok, for the sake of argument let’s allow 20kmh above the maximum speed limit, in my country that would be 150kmh, enough to get out of dangerous situation, still way bellow what modern car can do. And you really dont want to go above this kind of speed in urban environments if you’re not a trained professional. Speed limit exist for a reason which extends beyond “when you agree with them” raming in another car and transforming a 1 people emergency into a multiple people one is not a risk we should consider acceptable.