Renault profit warning intensifies challenge to Ghosn

&to=http://english.pravda.ru/society/2002/07/19/32813.html' target=_blank>Auto industry watchers knew Carlos Ghosn was setting himself a tough task when he took up the Renault CEO job and stayed on as head of Nissan as well.

But a surprise profit warning from the French carmaker, hit by flagging sales at home and a tired model line, has made that challenge clearer than ever.