With the paparazzi apparently off the hook, the investigation is now focused almost entirely on the white Fiat Uno that may have played a key role in the accident. New evidence filed in the official police dossier last week indicates that the Mercedes not only clipped another car but sideswiped it, leaving traces of white paint and black rubber along the entire right side of the Mercedes. The paint, identified as Bianco Corfu 224, was applied to Fiat Unos manufactured in Italy from 1983 to 1987; the rubber was found to be the same as used on the side moldings of the Unos. Police sources say they have eliminated all such autos registered in the area around Paris and are concentrating their search in central France, where a ““considerable number’’ fit the criteria. ““It’s really a mystery,’’ said an attorney familiar with the case. ““Nobody saw the little car in the tunnel. Nobody saw it go backward; nobody saw it go forward. But for sure it existed.''
