Complex sentence: The S1 was derived from Rolls-Royce's complete redesign of its standard production car after World War II, dubbed the Silver Cloud; each was its maker's last standard production car with an independent chassis.
Split into simpler sentences: The S1 was derived from Rolls-Royce's complete redesign of its standard production car after World War II, the Silver Cloud. Each was its maker's last standard production car with an independent chassis.