Sales of GM's large SUVs are falling and Cadillac knows that it can't float on the success of the Escalade and its brethren much longer, so it took a weekend trip with some 100 vehicles and a bunch of product specialists to a multi-million dollar wine auction in Napa Valley to pick the brains of some bourgeois elite. The goal was to get the ultra-rich to warm up to Cadillac and dispel any misconceptions they may have about the brand. There has been talk for a while now that Cadillac may move way up market soon, so this little field trip to the wine country makes sense. But can Caddy compete with the exclusivity and image of a Maserati for the purchasing power of the wealthy? The brand somehow managed to land the Escalade in rap videos, so we guess anything's possible.