This document discusses quality of service assessment for mobile speech services, including in vehicles. It contains the following key points: 1. The impact of terminal design on speech quality and methods for assessing quality are discussed, including standards for testing mobile terminals. 2. Driver distraction from speech services in cars is addressed, noting the importance of superior communication quality and seamless interaction to reduce distraction. 3. Ensuring high speech intelligibility and naturalness in vehicles is important to reduce driver distraction from poor sound quality. Wideband services and efficient use of vehicle audio systems can help achieve this.