Although I shudder at the thought, Lone Tree would meet all of the requirements Amazon is looking for. There's really no room left in downtown Denver and getting there will never improve because of the high density Denver has chosen for its future. Seattle has had high density for decades and its miserable (I worked there, I know). Lone Tree is located at the junction of I25/C470/E470 with Centennial airport two miles away. RTD has a light rail project underway due to be finished in early 2019 and Lone Tree has about 2,000 acres of developable land ready to be populated. Tell me again the Onassis family didn't know what they were doing forty years ago when they bought the land Lone Tree now occupies.