[vinay427]

That's not true for the modified Ford, though I concede it is for the Koenigsegg.

See here, coincidentally on the same source website: https://www.topgear.com/car-news/usa/ford-gt-just-did-300mph

This obviously isn't a series manufacturer, so the quote in the article may still be accurate but the title seems incomplete though it (correctly) doesn't claim Bugatti is the first.