The present invention concerns a method and apparatus for integrating a CAD model of a product and an HMI simulation model of a product into a format suitable to be run in a virtual reality program. The method and apparatus according to the present invention includes the steps of providing a CAD model and a simulation model of the product. The simulation model includes an HMI simulation portion and an electronics/mechanical simulation portion. The CAD model and the HMI simulation portion of the simulation model are then integrated into a virtual reality representation of the product and modeled in the virtual reality program.