Source^^. And the GPS numbers can be seen in the timing box in seconds for the Koenigsegg One:1 record.
The Rimac Nevera has verified done 0-171.79MPH rounded up 172MPH or 277km/h in 8.62 seconds.
Percentage difference in acceleration 8.62 to 10.703 seconds= 21.55%
The Koenigsegg got beat. Above 172MPH-250MPH is YET to be determined. No tests no verifications.