Moreover, Porsche has invested heavily into the brand and currently has between a 45 - 58% stake in it following the formation of the Bugatti-Rimac JV. I'm giving a range for Porsche's ownership because there are multiple conflicting sources.
From the Rimac press releases we have two different states with accompanying charts.
2021-07-05 - Porsche owns 45% of the joint venture directly, plus 24% of Rimac for an effective total of 58.2%. [1]
2021-11-02 - Porsche owns 45% of the joint venture directly, plus 22% of Rimac for an effective total of 57.1%. [2]
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[1] https://www.rimac-automobili.com/media/press-releases/rimac-...
[2] https://www.rimac-automobili.com/media/press-releases/rimac-...
In modern times this also means that it went through crash testing so modern production cars have much larger production runs to offset the costs of that or are very very expensive (millions). For example Rimac said they are planning to make 150 Neveras but they also had to make multiple rolling bodies and a couple fully built cars (at minimum one for EU and one for US if you want to enter both markets) for crash testing on top of any development cars.
But strictly speaking there is no one definition but instead each field/industry defines it in its own way. Motorsports has its own (multiple actually depending on the series/governing body), car manufacturers have their own, record keeping organisations have their own (guinness book of records), etc
https://www.tuvsud.com/en/industries/mobility-and-automotive...
For anyone else to whom this word is news and didn't understand that the "and" meant "which can be translated to English as"
There needs to be another standard that is something like... built at least 10k of them. Because less than that is still likely hand-built and it doesn't really mean much that it was "production".
In what sense is it not one?
I can buy a Caterham-7 and drive it on public roads too. That doesn't make it a production car even though it is probably much more standardised than the Koenigsegg.