Editing Grofri (section)

{{Short description|Austrian vehicle brand}}
{{More citations needed|date=December 2009}}
[[File:Grofri 1928 schräg.JPG|thumb|upright=1.0|Grofri manufactured 1928]]
[[File:Grofri-Werke AG 1923 100x200 Kr.jpg|thumb|upright=1.0|Share of the Grofri-Werke AG, issued 31. October 1923]]

'''Grofri''' was a brand of cars manufactured in [[Austria]] from 1921 to 1931 (1924 to 1927 under licence from the French [[Amilcar]]). [[Sidevalve|SV]] 903&nbsp;cc or 1074&nbsp;cc four-cylinder engines were used in these sporting [[cyclecar]]s. Racing versions were also made, some of them with [[Roots type supercharger|Roots]] [[supercharger]]s. The Gross & Friedmann house in Altzerdorf near Vienna manufactured these vehicles.<ref name=Tragatsch>{{Cite book |author=Erwin Tragatsch |url= |title=LE GUIDE MARABOUT DES VOITURES DE SPORT ET DE COMPETITION |publisher=MARABOUT |date=1971  |access-date=}}</ref>

The racing cars were successful, particularly in hillclimbs.<ref>{{Cite web |url=https://motor-car.net/austria/item/17188-grofri |title=Motor Car History |website=motor-car.net |date= |access-date=}}</ref> Successful race car driver Max Hoffmann (later known for introducing the United States to imports such as the Volkswagen, the Porsche 356, and the BMW) was selected as Grofri's factory driver. He  continued racing until his final event, a 1936 hillclimb.<ref>{{Cite web |url=https://www.hemmings.com/blog/article/max-hoffman/ |title=Max Hoffman |author=Jim Donnelly |website=www.hemmings.com |date=2018-09-22 |access-date=2023-12-05}}</ref> Famous opera singer Käthe Rantzau also successfully ran a fast Grofri in hill races.<ref name=Tragatsch/>