>> >> I seem to recall a Myth Busters TV programme where they tried this and
>> the
>> >> suggested impact was not twice as bad .............
>>
>> Twice as bad as what? Two cars both travelling at 60mph and having a head-on
>> collision isn't as bad as one car travelling at 120mph colliding with a fixed concrete
>> block, because both cars crumple and absorb energy but the concrete block doesn't.
>>
I think zippy is referring to the physics showing that a solid car hitting an unmovable object at Xmph has the same effect on its occupants as it hitting head on another solid car travelling at Xmph in the opposite direction.
In other words, the speed of the oncoming solid car/object is immaterial.
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