In 1991 Ford began deployment of the Computer Aided Parts Estimating System (CAPE), a highly advanced knowledge-based system designed to generate, evaluate and cost automotive part manufacturing plans. CAPE is engineered on an innovative, extensible, declarative process planning and estimation knowledge representation language, which under-pins the CAPE kernel architecture. Many manufacturing processes have been modelled to date, but eventually every significant process in motor vehicle construction will be included. Significant cost reductions are among the many benefits CAPE brings to Ford.