Indianapolis 500: Al Unser on his first of four winsFour-time Indianapolis 500 winner Al Unser explains how it feels to take the checkered flag at Indianapolis Motor Speedway.SI Staff|Share on FacebookShare on XAdd us as a preferred sourceFour-time Indianapolis 500 winner Al Unser explains how it feels to take the checkered flag at Indianapolis Motor Speedway.Add us as a preferred source on GoogleFollowLoading recommendations... Please wait while we load personalized content recommendationsPublished May 27, 2016 | Modified May 27, 2016SI STAFFShare on FacebookShare on XHome/Racing