File photograph of the Cadillac Converj Concept on display at the LA Auto show in Los Angeles California

 
File photograph of the Cadillac Converj Concept on display at the LA Auto show in Los Angeles California
The Cadillac Converj Concept is on display at the LA Auto show in Los Angeles, California in this December 3, 2009 file photograph. The production of the Cadillac ELR, the first plug-in hybrid electric vehicle from General Motors Co, is to begin in late 2013 at the same plant that makes the Chevrolet Volt, a top GM officical said on October 16, 2012 REUTERS/Phil McCarten/Files