Havana - Watched by silent crowds lining the streets, a slow cortege moved out of Havana yesterday bearing the remains of Ernesto Che Guevara toward the central city of Santa Clara, his final burial place. The caskets containing his remains, and those of six former comrades-in-arms who died with him 30 years ago in Bolivia trying to spark a revolution, were mounted in glass cases on seven trailers towed by polished army jeeps.