Congratulations to buyer GMO and seller Nissan. Smart deal--both sides. And entirely consistent with Domain Mondo's domain philosophy, see, e.g., Domain Mondo | Company Domain Names, IPOs, Simple Rules, Stupid Mistakes.
Implications: What is most striking is not that the three largest (public) domain name sales this year were all dot COM domain names, but that the purchasers were all non-US buyers: Japanese (Z.COM), Chinese (MI.COM) and German (WHISKY.COM), reaffirming that .COM is the only true global brand among all domain name extensions / Top-Level Domains (TLDs).
It is now obvious that no matter how hard ICANN and its new gTLD registries tried to "break" .COM, they have failed. Also, with Chinese being among the largest dot COM buyers, and Pinyin as a commonly used method of transcribing Mandarin pronunciations into the Latin alphabet (which is used in English and other western languages), there are literally millions upon millions of attractive letter combinations still available for registration in the dot COM extension!