If there was an accident an officer might give you a fine in both cases where I live. In the Porsche case they can say you broke the law and were speeding that led to the accident. But also in the case of old car for failing to adjust your speed to your skills, the state of your vehicle and conditions of the road and weather regardless of the speed limit.
The classic. In Bulgaria they used to do that (and maybe still do). Every time there was an accident they'd often write up everyone for "speed not matching the conditions" with the idea that all accidents are avoidable, you just weren't going fast/slow enough so git gud and don't forget to pay in the next 2 weeks to get a discount.
