Ford's naming rights extend through 2042 -- an average of $1 million/year. That's a bargain compared to some others like

Phillips Arena (Atlanta Hawks) $9.3 million/year

FedEx Filed (Washington Redskins) $7.6 million/year

Bank of America Stadium (Carolina Panthers) $7 million/year (I have to wonder: Did they have to outbid fellow Charlotte-based banking giant Wachovia?)

and many more, according to http://espn.go.com/sportsbusiness/s/stadiumnames.html