This morning I was looking through some airliner specs and was suprised to find that the DC-10 is the fastest widebody ever built, even faster than the MD-11, 747 or A340/330. I was wondering why haven't widebodies got faster over the years instead of getting slower. I would think that the evolution of aircraft design would make these newer designs faster.
Does anyone have an explanation? maybe fuel consumption has something to do with it?