Oklahoma suppossedly tested these things when the design was coming out, there are stretches in OKC that got them first because of all the fatalaties. Since they have installed the barriers the fatalates have almost completely subsided, the wrecks still occur but the deaths have significantly gone down... Personally, hit a steel pole or a wire I would personally prefer to hit the cable it gives a little and why you hit a concrete barrier Im pretty darn sure its not going to move. As far as the guy that died in the crash... How fast was he going? Was he wearing gear? Did he get caught between them piched or are they trying to say that he hit the cable so hard it sliced him like a cheese cutter, I doubt that actually happenned.
Cap