Yes I was greatly struck by what an amazing piece of engineering it was for it's time, there was absolutely no impression that you were on anything other than a bog standard kite, other than the tucker and pop were high quality. Equivalent military jets of the time would be struggling to fly at that height and speed and the crew would have been trussed up in pressure jerkins and goon suits possibly breathing forced oxygen while you sat in a comfy chair tucking into your canapes, drinking Krug and having urbane conversation with your neighbour. It certainly held to the old maxim that if it looks good then it flies good, it looked like it was doing Mach 2.0 sat on the ground.