As far as i see he didnt mention anything about built up areas? He could have be talking about moterways?
There far to much crap going about that speedning kills. No it dosnt kill, The fact is if i child runs into the midle of a road all the time its not gonna last long before it gets hit by a car is it? Another point is that your more likey gonna crash into something/someone by not paying attention to whats in front of you - I.e glancing on the pavement at a bird. No matter how quckly your going if you glance at the bird and not paying attention your gonna hit somthing. However that said there is limts for a reson - Some of them are totally stupid, However drivers should be able to use there common sence and do 20 round roads that have kids playing and such and drive quicker when its safe. If they dont have the commen sence - they shouldnt be on the road - Such as idots that do 40 on the moterwat with a 70 limt Or the same way round, Idots that do 60 in a 30.
and on the moterway speed limt im sure newer cars could do 100 easiley and safely along the mother way than a 1980's car.