Consolidation continues to be necessary in the auto industry but there is nothing new to report on Fiat Chrysler’s (FCHA.MI) (FCAU.N) desire for a tie-up with General Motors (GM.N), FCA CEO Sergio Marchionne said on Friday. “The (need for) consolidation remains valid, no one has questioned its economic rational,” Marchionne said, speaking on the sidelines of the launch of a re-styled version of its popular Fiat 500 hatchback. Marchionne approached his counterpart at GM, Mary Barra, with a merger proposal earlier this year but was rebuffed.