So to 100mph the Senna is 0.9sec quicker, to 150mph the Senna is 2.0sec quicker, to 180mph the Senna is just 0.5 sec quicker. Standing kilometre it's only 0.8 seconds quicker.
So off the line the Senna is faster (helped by stickier tyres and quicker box) but over 100mph there's nothing in it.
A quarter of a century older yet still mightily impressive
