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>> There are taxi apps that work exactly like Uber's like 'Free-now' where you can see your trip, its aproximate cost, the driver's rating...

Pre uber hailing a cab from a location other than the airport in Atlanta where I live was impossible. You'd have to call their 1-800 number hours in advance with no guarantee of it being serviced. Even if such apps exist now it might be due to uber pushing the envelope. Uber and other ride sharing service might not be relevant in the NYCs, Chicagos and Londons of the world but for cities like ours they were a godsend.