Stock: A never-ending stream of trucks brings coils of steeel from mills in Sault; Ste. Marie; Quebec and the United States to the General Motors Plant in Oshawa. Most of this will be turned into components for the new J-cars. To meet J-car schedules; the receiving; processing and shipping facilities are being expanded. GM is spending $300 million improving its Oshawa operation - for new building; renovation; upgrading and retooling. [Incomplete]