CarCool redefines carpooling by connecting users with compatible companions through its innovative 'Vibe Score' algorithm. Users can update their interests in the profile section across categories like Lifestyle, Entertainment, Outdoor Activities, and Sports. These interests are converted into a normalized vector in the backend and stored in the database. When searching for rides, the 'Vibe Score' is calculated and displayed, allowing users to sort rides in descending order based on 'Vibe Score,' alongside other sorting options, ensuring personalized and enjoyable travel experiences.