Core Insights - Amazon is accelerating its online automotive platform by expanding into the used and certified pre-owned car markets, starting from August 4 in Los Angeles [1][2] - The platform aims to provide a transparent and convenient one-stop shopping experience for customers, contrasting with Costco's limited offerings [1] - The platform has expanded from initial testing to 130 cities across the U.S. since its launch at the end of 2024, although specific dealer partnerships and transaction data have not been disclosed [1] Summary by Sections - **Business Expansion** - Amazon is integrating online resources with dealer networks to simplify the traditional car buying process and redefine consumer expectations in automotive e-commerce [2] - The inclusion of the used car market allows Amazon to build a comprehensive automotive sales ecosystem covering new cars, certified pre-owned cars, and regular used cars [2] - **Customer Experience** - The platform is designed to enhance customer satisfaction in car purchasing, with a noted increase in online buying demand due to favorable macroeconomic conditions [1] - The complete e-commerce experience for dealers requires technical system integration, including real-time inventory synchronization and dynamic pricing updates [1]