The record set by the CCR is far more impressive then the record set by that 9ff Porsche. From an article on the test run:
"Car Set-up:
Standard road car fuel, Standard CCR Michelin tires, Standard ride height of the car, standard engine configuration, standard wheel geometries, standard gearbox, standard clutch, standard brakes, standard over boost pressure from the superchargers.
Test safety equipment:
Roll cage, 4 point safety belts, Fire extinguisher system, logging for data collection."
This car was BONE STOCK with the exception of the rollcage and some equipment that added weight and probably slowed the car down. The 9ff had to have it's wing mirrors removed and all it's joints taped up to make it's run. It was not in it's street legal spec form. The 9ff is also not a car you can buy straight from the factory in a fashion identical to all the other cars of it's type.
"A team of Nardo Prototipo technicians independently verified the speed of the CCR. The car was clocked using Tag Heuer´s Splitmaster 650 with photocells stationary at the track, recording the average speed during 1 km."
"The constant turning motion of the car creates extra friction on the tires. This extra friction overcomes the extra horsepower that was needed for further acceleration. The maximum speed was reached at around 6790 rpm, which is not equivalent to the maximum hp level, which is at a higher rpm.
With this verification of speed, Christian von Koenigsegg is even more confident that the Koenigsegg CCR is capable of reaching its projected top speed of 395 km/h, or more, in a straight line."
"Filmator documented the record attempt. Filmator is a Swedish filmcrew that currently is making a documentary about the Koenigsegg Company for Swedish television.
The official Test Report is issued by Prototipo, acting as a third party verificator and is forwarded to the Guinness Book of Records for processing."