Personally I don't believe it's just over the horizon. I think we'll continue to have advancements in new areas like autonomous driving that will push the envelope. Perhaps we'll one day be able to assemble everything and create Minksy's society of minds, but that path is very different from the human brain and how it works. However, it's something that is far more reasonable to create by human engineering rather than relying on (or trying to reverse engineer) the magic soup of chemicals and physics that is biology.