Abstract: Method and system for designing and producing a lightweight automobile or vehicle body. Structural performance targets are selected, a beam model analysis is conducted, and a body-in-white design is developed. A shell model is created and analyzed and material gauges and manufacturing processes for the body components are selected. A structural analysis is conducted to determine whether the shell model meets the selected structural performance targets. A crash model is created, analyzed, and modified until satisfactory crash requirements are met. A final structural analysis is conducted to determine whether the shell model meets the selected structural performance targets.