Which ride-hailing service first launched a mobile app allowing customers to request and pay for rides directly through their smartphones?

The transportation industry has been dramatically transformed by mobile technology over the past decade. Ride-hailing apps have revolutionized how people move around cities, disrupting traditional taxi services and changing consumer transportation habits forever. This trivia question tests your knowledge about the product development history of a technology that fundamentally altered the transportation retail experience.

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Uber (UberCab, launched in 2009)
Lyft (originally launched as Zimride in 2012)
Didi Chuxing (originally Didi Dache, launched in 2012)
Grab (originally MyTeksi, launched in 2012)