HO CHI MINH CITY, Dhu-AlHijjah 8, 1436, Sep 22, 2015, SPA -- A young, tech-savvy population short on cars but big on smartphones is driving double-digit growth for ride-hailing apps Uber and GrabTaxi in Vietnam, and inspiring some executives to dream of replacing private car ownership altogether, according to Reuters. Uber launched its service in Vietnam three years ago and says Ho Chi Minh City and Hanoi already have the highest average numbers of trips per user out of the 300 cities in which it operates, double the rate in New York. Ride-sharing apps have taken off among Vietnam's rapidly expanding middle class as they provide four-wheeled comfort in a country better known for chaotic swarms of scooters and Southeast Asia's most expensive taxi fares. -- SPA 00:39 LOCAL TIME 21:39 GMT www.spa.gov.sa/w