I suppose, this is another perspective. Hamilton's fastest lap on 30 laps old tyres suggests that Mercedes had more speed in the car than they showed. But all teams drive well within the speed of the engine to protect the life of the engine. Hamilton was probably more willing to take some life out of the engine at this race than would be advised by his engineers. I don't think there is anything extraordinary on the speed front. But there is something uncanny about being able to do a fastest lap on a 30 laps old tyres. I bet all the teams suffering with the Pirelli tyres would be very interested in this.