Lean is the system in which all the non productive or non value adding activities are accounted and removed.Its a system or a process that has zero non value adding steps. Standardisation benchmarks are set by the external or internal group of experts hired to do so. The market, target group of Toyota differs from Rolls Royce. Hence what may be standard for Toyota may not be the standard needed for Rolls Royce. Which implies though its a standard for Toyota; it cannot be implemented at Rolls Royce.