From Dictionary.com (bold added):
fi·at [fee-aht, -at; fahy-uht, -at] Show IPA
noun
1.
an authoritative decree, sanction, or order: a royal fiat. Synonyms: authorization, directive, ruling, mandate, diktat, ukase.
2.
a fixed form of words containing the word fiat, by which a person in authority gives sanction, or authorization.
3.
an arbitrary decree or pronouncement, especially by a person or group of persons having absolute authority to enforce it: The king ruled by fiat.
From Wikipedia.org (bold added):
FIAT, an
acronym for
Fabbrica Italiana Automobili Torino[2] (English:
Italian Automobile Factory of Turin), is an Italian automobile manufacturer, engine manufacturer, financial and industrial group based in
Turin in the region of
Piedmont. Fiat was founded in 1899 by a group of investors including
Giovanni Agnelli. During its more than century long history, Fiat has also manufactured railway engines and carriages,
military vehicles and aircraft. As of 2009, Fiat (not including
Chrysler) was the world's ninth largest carmaker and the largest in Italy.
[3]when one can't address the merits of the argument, distract.