The talks about fast cars, do you mean the travelling speed of a car?
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.
OMG. Means Diago was driving without license or even a non driving experience? Of course that isn't the case that lead to the accident which took his life.
And besides, the speed limits of vehicles has nothing to do with the drivers involving in accident instead the drivers should be blamed for their recklessness and over speeding. Moreover, there's usually speed limitations of vehicles regulated for road safety especially in the local roads while speeds on the highways might be unlimited.
You also need to understand that most drivers neglects these safe driving guides. However, sometimes the accidents may not really be about the speed gauge because even when you are driving slowly, accident do still occurs but can be limited from when over speeding.