Two ideas created the 2013 Mac Pro. The first was a history dating back to the original PowerMac Cube which highlighted the idea of vertical compact design and high performance coupled with near-silent high airflow. The second was a link between the Lockheed SR-71 Blackbird, the PowerMac Cube and Macbook Pro as examples of titanium craftsmanship in the laptops and a tradition in extravagantly expensive engineering. A reference is made to the power of supersonic jet turbines as an enduring symbol of unrivaled speed and power. Specifically, SR-71 is one of the American symbols for zero-compromise engineering and the ultimate example of design in balance with performance. In response to this concept, the specifications were maximized, the engineering extravagantly expensive, and the black paint refers to stealth. As with the SR-71, Apple made a conscious decision with this generation to allow for expensive design and expensive manufacture. One of the driving factors in the design was the outer shell which was deliberately made seamless to demonstrate both engineering excellence and design purity. Working with the concept of jet turbine. When the outer shell is removed, the internal components are both easily serviced and strongly resemble a jet engine with the cowlings removed. The main cooling fan and thermal core takes design cues from jet turbine intake blades and combustion chamber. All of the thermal dissipation for CPU/GPU/ Power Supply are reverted to the "central thermal core" which maximized the air-metal contact area and thermal mass of the heat sinks and solved the problem of containing heat to one region of the system without leakage into the surrounding void. Externally, the cluster of connectors also refers to the central mounting point of a jet turbine to the wing of an aircraft. Early appraisal stated it as "a challenge worthy of Apple ......a computer only Apple could consider making (in terms of engineering cost and manufacture cost)." It has been stated by Apple that significant engineering challenges were posed by the thermal core in relation to the cooling performance, fan efficiency and noise levels. This caused a delay of over 12 months to launch. Several engineering innovations of this design include the interconnects between boards, fan blades, the triangular cooling system, CPU/GPU sandwiched between PCB and chassis, overall size, zero-legacy technology and deep-draw single-piece outer shell. The first flight of the SR-71 was December 22, 1964. Almost 50 years later, the 2013 MacPro pays homage to unrivaled engineering with a December launch. The Pratt and Whitney designation of J58 might find its way into some markings internally. Like the plane, the new Mac Pro will be built in North America. Keep an eye on the launch date to see if they managed to align it with the maiden flight ! (edit - as it turns out the first Mac Pro orders arrived late in December and photos of packages appeared on forums as early as 24th December ... coincidence ?) Footnote: Apple felt that taking onboard a difficult engineering task like this would ultimately pay off by forcing the competition to engineer the same solutions from scratch. That would take time and cost significantly more than any computer ever built.