Which innovative marketing strategy did Uber first use to rapidly expand into new cities, revolutionizing the transportation retail model?

The transportation industry has been transformed by innovative retail models and marketing strategies over the past decade. Ride-sharing companies have revolutionized how we think about mobility, creating new customer experiences and business models. Test your knowledge about one of the most significant product innovations in modern transportation history!

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The 'Ambassador Program' where existing customers received free rides for referring friends
The 'City Launch Team' model that recruited local teams to simultaneously acquire drivers and riders
The 'Surge Pricing' model that dynamically adjusted fares based on demand
The 'Free First Ride' promotion that gave all new customers a complimentary trip