The ride-hailing leader is firing on all cylinders.Uber Technologies' (UBER -1.20%) stock rallied nearly 30% over the past 12 months as the S&P 500 advanced less than 20%. The ride-hailing leader outperformed the market as it gained more customers, streamlined its business, and expanded its subscription-based platform.But will Uber's stock stay ahead of the S&P 500 over the next year? Let's review its business model, growth rates, and valuations to find out. What happened to Uber over the past year?In 2020, ...