Cadillac has one of the most hotly-anticipated debuts scheduled for the fast-approaching Detroit Auto Show in the ELR. A more powerful, luxurious and stylish version of the Chevy Volt, the ELR will be Cadillac's first dedicated hybrid model. The ELR was previewed by the Converj concept in 2009, and a few weeks ago Cadillac released a teaser rendering showing the silhouette of the production version. Now it's followed up with an official shot of the camouflaged ELR prototype.