It’s been over three months since General Motors set its $3 billion media agency review in motion (as part of its larger global agency consolidation plans), and as the shops get whittled down (or so it seems), sources familiar with the matter tell us that one of those still in the mix is IPG Mediabrands. We’ve been told that Mediabrands, which is led by Matt Seiler, the PHD/Universal McCann alum who took over as head of the Interpublic unit in January, is “currently engaged” in the new biz pitch for GM’s media business. We just have to wonder if this will affect Mediabrands’ relationship with Hyundai.