San Francisco-based mobile car service Uber announced it's teaming-up with the NFL Players' Association to provide alternative transportation to players, while dissuading them from drinking and driving.Uber and players' representatives said they're initially providing players with a credit to try the service, which operates in 20 U.S. cities as well as internationally."Each player will roughly get about $200 worth of credit on their initial launch to Uber," said George Atallah, spokesman for the players' association.The program is part of the union's push to cut down on the number of player's caught drinking and driving, yielding those unflattering mug shots or courtroom video. Atallah said several former players who work at the association use Uber, and reached out to the company to team-up."Overall we're looking at resolving and trying to combat changing player behavior around DUIs," Atallah said.Uber allows people to use smart phones and other mobile technology to summon a town car or limousine."We're essentially going to be providing transportation alternatives for players," said Ryan Graves of Uber. "Whether they're going to and from a game, or to and from a bar, or to and...