Annual Memorial Day race, informally
I believe the answer is:
indy
(Other definitions for indy that I've seen before include "US car race" , "US form of motor racing" , "Type of motor racing" , "Abandon, discard" , "500-mile US motorcar race" .)
I believe the answer is:
indy
(Other definitions for indy that I've seen before include "US car race" , "US form of motor racing" , "Type of motor racing" , "Abandon, discard" , "500-mile US motorcar race" .)