Toyota, Greenberg Traurig Part Company

Updated at 5:07 p.m.

The lobbying relationship between Greenberg Traurig and Toyota Motor Corp. has hit the end of the road.

The law firm on June 29 stopped its government advocacy work for Toyota Motor North America Inc., the holding company for the Japanese automaker's U.S. manufacturing and sales companies, according to a lobbying termination report filed with Congress last week. Greenberg received $510,000 from Toyota since it started to lobby the U.S. House of Representatives and Senate for the company in 2009, congressional records show. The law firm focused its efforts on matters that included trade, hybrid cars, labor, fuel technology and energy policy.

Greenberg shareholders Ira Shapiro, Alan Slomowitz and Donald Stein most recently handled the account with senior director of governmental affairs Diane Blagman and senior directors J. Daniel Walsh and Michael Williams, as well as assistant director Joshua Sanderlin.

Martha Voss, a Toyota spokeswoman, said the decision to drop Greenberg followed "pretty much standard practice," coming after the automaker completed a periodic review of company activities and resources. She said Toyota was "well served" by the law firm.

Toyota Motor North America has spent at least $900,000 on federal lobbying this year. The company has used its own staffers and lobbyists from Brown Rudnick and Hogan Lovells, among others, to advocate for it.