This is a complex situation.
Among other things there is no comparison between U.S.A. and most other countries financially supporting a local car industry.
G.M. IS an American owned company. and they are supporting there own.
Likewise Italy with Fiat etc.
Holden is NOT an OZ company. It's owned by U.S.A.
Perhaps this place was wrong when so much effort was put into setting up the ol' '48 series 215'
Holden, which lead us into building an auto parts industry, maybe the effort would have been better spent continuing with other enterprises, maybe continuing aircraft manufacturing, boat and ship building skills gained from wartime manufacturing.
Meanwhile we did have 'Australians own Holden', why the hell did all the OZ State, and Fed. governments and also local Govt. stop buying Holdens, and Falcons in favour of swanning 'round in fancy Euro imports?
When Govt departments used locals, the used car market got low K. bargains, Buyers were very happy with their purchases, plus these cars kept local owned service and repair and part manufacturers in business.
Cheers pancho.