Designing LLM Response Layouts for XR Workspaces in Vehicles

This study investigates the design of response layouts for large language models in XR environments for vehicle settings. Our formative study identified usability challenges with the current linear layout, such as difficulties in extensive scrolling and mid-air interactions. Based on these findings, we designed an improved layout that utilizes multiple windows for efficient access to diverse content, with a cohesive placement to minimize motion sickness. A user study with 24 participants compared the proposed interface against a conventional web browser interface through various information-seeking tasks. The results demonstrated that the proposed interface enhanced overall usability compared to the baseline.