Murder victim s car recoveredSPRINGFIELD, Mass. (API — A car owned by a slain reai estate agent wns recovered Wednesday by police, while Rhode Island authorities saw some similarity between the killing here cf Margaret Rossow, G2, and a murder five ye.'trs ago in Barrington, ll.I. -Police detectives examined Mrs. Rossow's car, believed to have been used by her killer for his escape. Her body was found Tuesday on a bedroom floor in a vacant house that her firm had offered for sale.Police said Mrs. , Uossow, of Longmeadow, had been stabbed in the neck and strangled apparently by a man witnesses said had been with M rs. Rossow Monday night, 1The man had told her he needed tp find a vacant home available for immediate occupancy, police said.In Barrington, R.I., police chief Stanley Gontnrz said the killing of Mrs, Rossow was “broadly similar” to the unsolved Edna MacDonald slaying.Mrs. MacDonald, also a real estate agent, was strangled in Barrington on April 30,1971, while showing a vacant home to a man who said he was a prospective buyer.Gontarzsaid he will ask Springfield police for more information about their case.