Nanoscale mechanical systems that allow (to scale) movement and agility not currently obtainable by human science is not even a hurdle that would need to be passed for any good measure of an intelligent system.

Can you swat an self flying automated drone flying at mach whatever at extremely high altitudes? Can the fruit fly reach the moon? Is a blind quadraplegic HUMAN intelligent? This discourse is really too low a level to even bother arguing about, but what the heck I'll through my opinions into the slurry.

AI is used in so many forms today, and in so many ways that if you bothered to ever do real research on the topic you would be astounded. Computer programs are already better at diagnostic medicine, detecting breast cancer in x-rays, automatic control systems of all sorts that would put beat your fruit fly reactions all to hell. AI is used to determine best routes by time in cities now. AI programs are used by industry for every kind of manufacturing and is essential in continuing to develop chip technologies.

I would more question whether many humans have already been exceeded by AI than the other way around. How many human beings act like drones serving some AI computer programs orders? BFD that yes some problems (pattern recognition that was needed for speech and vision recognition) were more difficult than originally anticipated. And what was thought to be the highest "intelligent calling" like chess and math proofs have turned out to be areas that we were able to be exceeded relatively easily.

Have you stopped to consider that 60 years of development has succeeded in creating artificial structures that can exceed many of our "intelligent" abilities developed over the course of billions of years of evolution. The rate of advancement of artificial intelligence as compared to our natural world evolution is so many orders of magnitude it boggles. That is why so many people talk of the ocming singularity when such intelligence achieves capabilities and knowledge that it exceeds any kind of ilnear predictability.

The combination of improvements in sensors, memory, computing power, and nanomechanical systems will take AI systems over the top in terms of conquering many of the limitations that the narrow minded people currently think of so "highly intelligent" actions (like driving a car). The DARPA challenges for automated robotic vehicles has already yielded amazingly capable vehicles that were developed on a dime in short amount of time. Really, the technology is already there, and only easily projected improvements in engineering (speed up the processing modestly, shrink the sensors some, put it into a nice package) remain. There will be fewer and fewer activities that the vast majority of human beings on earth couldn't or won't be exceeded by artificial intelligent systems, until finally it will become evident that we must either merge or advance in some fashion (artificial self evolution) or give way to becoming pets of an automated systemic society.

A perfect storm is coming for the next stage or transition to another level of higher intelligence on planet earth. The use of tighter and tighter high bandwidth global communications, coupled with almost unimaginable memory and total computer power, will continue to yield advancement in science in all disciplines at an accelerated rate. Consider some of things that are happening concurrently--(mass mind due to highly specialized and globally connected human beings, supplemented by vast computer power and structure (the web) that serves as a species memory, artificial evolution both using traditional biological (DNA) and alternate tracks (silicon based AI), optical computing, and hybrid combinations (e.g humans with artificial implants).

Denial of the inevitable process continues unabated, but it almost exclusively comes from religious ignorance or fearful humans whose egos are bruised that that are about to be surplanted by something they dont understand. Personally, I see the developments as inevitable and take the same fatalistic point of view as upon personal death, or the change in civilizations. Change happens, cells die away from the body, human beings die, civilizations die, and unless some cataclysmic event makes it all moot, our species will be surplanted by our own creations.