Driving, walking, biking, or taking public transit are no longer going to be your only navigation options when you use Google Maps in iOS or Android. Expanding upon a partnership with Uber that was already in place, Google is adding support for more ride hailing services to Maps. These will all live in a new tab in the app. When you enter a destination and choose how best to get there, fetching a ride from the likes of Uber (where it's present), 99Taxis (in Brazil), Ola Cabs (in India), Hailo (in the UK and Spain), mytaxi (in Germany and Spain), or Gett (in the UK) will be an option as...
Source: http://www.gsmarena.com/google_maps_adds_support_for_more_ride_hailing_apps-news-17245.php
