HIROSHIMA, Japan, March 24, 2016 /PRNewswire/ -- The fourth-generation Mazda MX-5 (known as Mazda Roadster in Japan) has been named the 2016 World Car of the Year. It is the second Mazda to win the award, following the Mazda2 (known as Mazda Demio) in 2008. The third generation MX-5 was...