Sure a car could have a technical fault or something but these & many more incidents like them are as a result of extreme high speed in very powerful cars. Sadly some fault or maybe all of it must be attributed to the person in control of the vehicle. Speed limits exist for a reason, rest in peace all those who lose their lives obviously. Similar happened with the actor Paul Walker, their Porsche hit a tree & burst into flames, I assume the speed was high. Super cars being driven at high speed are a danger, maybe there should be speed restricters on these cars but then they won’t be as desirable & people won’t buy them.
Speed restricting devices and programs of those luxurious vehicles will definitely make people not buy them, so it is not commercially doable and it would be highly unpopular.
If this discussion was taken to some societies, for example in the United States, it would be some debate about people's rights to use their product (the vehicle) with whatever speed they want and assume the consequences of it. It would be a similar debate that one about cigarettes and tobacco in general.
People knows smoking harms oneself and others around, but still there is a right in place for people to decide whether they want to screw themselves up and increase their chances of illness for the sake of their vice.
In the case of high speed vehicles, it would be about people having the right to enjoy their expensive car, assuming the possible consequences of doing so. Also, as far as I know, in some countries in the EU there are no legal speed limits in highways.