Dario Mancini discusses traffic congestion and mobility issues in urban areas, highlighting that 1.3 million cars are used only 4% of the time, contributing to economic waste and safety hazards. Waze's Connected Cities program aims to alleviate traffic through community-based GPS and real-time data exchange, significantly reducing travel times and emergency response times. Carpooling initiatives are also introduced as a solution to enhance commuting efficiency and reduce congestion.