From the DoT book referred to elsewhere: “Motoring magazines and programmes often dwell upon the illegal top speeds of which modern cars are capable and how they perform at those speeds.” Well, high speed is not illegal on some German autobahns nor on private race tracks over which owners of such cars may wish to perform. When overtaking, the less time taken when so doing the safer the manoeuvre, so acceleration figures are relevant. So are braking distances and fade figures. Nothing in the book refers to how greatly tyres, brakes and road-holding have improved, rendering speed less lethal than the DoT pictures it.