so call... to talk with an insurance expert about everything that comes standard with our base auto policy. and if you switch, you could save up to $423. liberty mutual insurance -- responsibility. what's your policy? welcome back to the money lead. abc news is announcing diane sawyer will be step aside as anchor of the network's evening newscast "world news." david muir and co-anchor of 20/20 will replace her starting this fall, but in an interesting twist, abc announced good morning co-host george stephanopoulos will be the chief anchor on abc, the main guy in the chair for some of their biggest stories. this is the kind of intricate mass media mix-up that only cnn's brian stelter can make sense of. >> reporter: from cronkite. >> this is my last broadcast as the anchorman of the "cbs