John Fry tranports the San Jose Ballet and his sports team in the 747.
Both teams played (or play) at the SAP Center (San Jose Arena). Probably, the 747 tail advert was a deal-clincher, goodwill/promotion gesture or both. It makes a lot of sense to drive/cross-promote advertising, sponsorships and other business into a common ecosystem.
As it happens, I used to hang out with the Sabercats and (now former) Saberkittens at (undisclosed) because of a Stanford hookup. Since I don't find drinking fun anymore, I'm old and boring now. :)