Which transportation company first introduced a mobile app-based platform that allowed users to hail rides directly from their smartphones, revolutionizing the retail aspect of personal transportation?

The transportation industry has been revolutionized by technological advancements and innovative retail approaches. Major companies have implemented sophisticated supply chain management systems and strategic brand positioning to stay competitive. This poll tests your knowledge about a significant product innovation that changed how transportation services are marketed and consumed worldwide.

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Uber (launched UberCab in 2009)
Lyft (launched as Zimride in 2007)
Didi Chuxing (launched as Didi Kuaidi in 2012)
Grab (launched as GrabTaxi in 2012)