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quote:However i actually saw a recording on TV about ten years ago showing an F16 fighter flown by remote control at full speed along a track way into a large solid block of concrete for some test. The result was a few tons of flattened metal,the plane just collapsed in on itself. The concrete block survived with only a few marks,even the engines folded up.
quote:Incidentally, when driving along a road with a "loose chippings" sign, I normally keep the fingers of one hand pressed against the windscreen, to absorb some of the impact of any stones that hit the glass