Fastest car in game

I'm surprised this has never been asked!
Which car [preferably not open wheel] has the highest top speed.
I have downloaded several tracks from the workshop that are 30 km long and more, they have long sectors for high speed, and I need a very fast car to do them as fast as possible. I need a high top speed car that can change the gearbox ratios to seek max speed.

Additionally, if you can recommend a setup for the proposed car, that would be great. Anything that can run fast and safe in Nordschleife (suspension wise) will be good good for this tracks.
ps.: Did I just come up with a challenge?

 

My future K.I.T.T. mod,in SP mod more then 400km\h

 

rcco ex_zero can reach like 430kph

 

The problem with that car is the power unit. How long can it run for?

edit: never mind
the car is capable of 20 minutes of hard racing on a full charge

 

In rF1, there was a mod for Land Speed Record cars, like Craig Breedlove's Spirit of America. Could be converted to rF2.

 

LOVE IT!

 

Have you integrated rFactor2s new 'Push to Pass' button for the turbo boost of the Kitt mod?