This document outlines a proposal for UberCab, a next-generation on-demand car service that uses mobile apps and optimized dispatching to provide faster, more efficient rides than traditional taxis. Key aspects include using luxury vehicles, incentivizing high-quality drivers, only allowing pre-screened members to request rides digitally, and using advanced algorithms to minimize wait and travel times. The service aims to initially launch in San Francisco and New York, targeting professionals, with plans to expand nationwide and integrate additional location-based services.