David Dayen:


 With a crush of must-pass bills coming at the end of the year, it’s a lobbyist feeding frenzy on Capitol Hill. The prize: a rider tacked onto one of those bills that’s worth big bucks.
 
 And the biggest winner so far is not the industry you’d normally think of as the most powerful in Washington — not banking, pharmaceuticals, oil and gas, or telecommunications. Arguably the most successful group when it comes to building bipartisan coalitions to protect their profits and avoid federal scrutiny is auto dealers.