Thought-provoking presentation on this revolutionary high power density electric motor and generator design. Where will the automotive and aerospace industry be in, say, 30 or 50 years time as these new technologies emerge and mature? Perhaps expensive today but the history of technology shows that in many cases prices rapidly come down as the user base grows. Aerospace in particular is perhaps on the verge of a transition to hybrid or all-electric primary power solutions in commercial aviation use This was discussed recently at the IET Annual Symposium on All-Electric Aircraft Technology, held 28th January 2016 at our newly-opened Savoy Place HQ. It would be interesting and valuable to hear your views on how this technology area is likely to progress.