The talk will explore the transformative role of in-cabin radar technology in enhancing vehicle safety. The session will cover the fundamental principles of in-cabin radar systems, their integration into modern automotive designs, and their real-time capability to monitor driver and passenger behaviors. Emphasis will be placed on advanced features such as detecting driver fatigue, monitoring vital signs, and ensuring passenger safety, including child presence detection. The tutorial will also highlight recent advancements, challenges, and future prospects in the field. The in-cabin radar technology will be compared with the alternative optical sensors. Attendees will gain valuable insights into the technical aspects, regulatory considerations, and potential applications of in-cabin radar, positioning this technology as a cornerstone for next-generation automotive safety systems. This talk is essential for industry professionals, researchers, and developers aiming to stay at the forefront of automotive innovation.