UPDATE 1-GM's Cadillac to introduce high-end sedan in late 2015
September 19, 2014 at 09:08 AM EDT
DETROIT, Sept 19 (Reuters) - As it strives to energize its Cadillac brand that once led the U.S. luxury auto market, General Motors Co said on Friday it will begin production of a new "top-end, high-technology car" by the end of 2015.