Yes there are speed limit laws but it seem that is not enough using the accident record. I propose there should be a law on the usage of fast cars, the only requirement to own one is your drivers license and your money. There should be a special license for the use of fast cars where users will go through a school in the handling of fast cars and overall usage. The government should not show a blind eyes to all this incidents.
I understand your concern for safety and to avoid future reoccurring of this kind of accident on people but let's not forget that even the non fast car we might think is more safer has the highest record of accident, actually accidents can happen anytime even when the person is not on high speed, that is called a fast car doesn't mean all the people who will drove it will use all speedometer because there are law enforcement agencies or officers whom there work is to make sure people don't go beyond the maximum speed range, so actually driving a fast car is not the problem.