400km/h is very fast. Much faster than the majority of people will ever experience in a land vehicle, and that it now features as a 'contest' between car manufacturers is astonishing.
On August 6th, a very carefully prepared Bugatti Chiron performed an astonishing - incredible? - feat by accelerating from 0-400km/h, and back to a standstill, in around 42 seconds. Two parts of this sentence are important - the 'carefully prepared' part, and the 'around 42 seconds' - normally I'd be a lot more precise.
However, that's now irrelevant.
On October 1st, a hastily cobbled together attempt on the same feat was carried out by Koenigsegg using a customers car. Last minute location arrangements using a bumpy, unprepared and slippery concrete military runway which was strictly too short for the purpose, no other car being available so "we took a customer car which had been prepared for delivery," and a factory driver who wasn't confirmed as available until the day of the drive.
Which took over 5 seconds less than the Chiron. Actually, 0-403-0 in 37.28 seconds. The 0-400-0 took just 36.44 seconds. The final run included wheelspin when changing into 3rd gear, logging show 183km/h at the time.
The 0-400 acceleration is on a par with the world's fastest production motorbike which, derestricted, also takes 26 seconds to reach 400km/h. It does cost a little less, of course.
Full details of the Koenigsegg run are here. But for those who thought tl;dr and couldn't be bothered with the link, here's a video.