Produces a flag icon attached to a wikilinked national speedway team article.
Parameters
nation — Use either the name of the nation or the three-letter country code
name (optional) — Can be used to change the wikilink display text
variant (optional) — Specifies an alternate (historical) flag to use. This parameter is documented by the appropriate template in
Category:Country data templates.
size (optional) — Can be used to change the flag icon size (use sparingly!)