Despite the 60% increase in share price so far this year, the stock currently trades at a bit more than 26 times earnings expectations. While that's certainly a higher multiple than it received at the start of the year, it's still a low enough valuation to justify buying a stock that could consistently produce earnings growth in the 30% range for the next few years as it continues to expand its margin and grow its revenue base.As Uber's flywheel spins, it's seen strong EBITDA (earnings before interest, taxe ...