[svandamme]

Sure thing, but did you see that car go offroad, or one they rigged up to look just like it?

It's reasonable to believe they used the real one for the tarmac parts of the vid.
I just don't buy they took the same car in the dirt.

For one thing those engines are to delicate , they are not designed with air filters that can cope with all the dust... And like i said, there is NO way in hell they can get the power down on dirt. And there is NO way a driver can make the engine sound so smooth on dirt as it did in the video.

Dirt will give them less traction then driving around in the wet, with rain tires.
look up some wet F1 video's , listen to the engine when they aquaplane... It is not a smooth sound