A demonstration of how virtual E/E architecture simulation - combining open-loop (drive recording playback) and closed-loop (synthetic scenario) approaches - can accelerate and standardize multi-domain vehicle software development and testing. We show how an Android Automotive OS emulator and an Autoware OpenADKit AD/ADAS stack can run within a single virtual E/E architecture definition, with vehicle signals mapped toward a common signal abstraction layer. Participants will see a live demo transitioning from open-loop signal replay - feeding recorded drive data into both IVI and AD stacks - to closed-loop simulation where the AD stack perceives and actuates against a synthetic scenario while the IVI reacts to the resulting vehicle state in real time. Key takeaways include a practical framework for multi-domain virtual testing, signal abstraction as an enabler for cross-domain interoperability, and how a virtual-first approach can accelerate vehicle software development across domains.