Sports! even one can get fatal injury playing football... but motor sports take the risk factor to whole next level... both Dirt and drag strip/track can give one a fatal blow....
I also think that dirt track may be in some cases will be more forgiving as the rider would land in dirt or mud not on concrete to and that is safer (I am guessing) ? no ?
But I strongly look forward to see one drag strip in Pakistan InshAllah.