Hi matt
I just watched it again and made the time around 7:44 very quick but still mile off the record. Would not wish to be a passenger at that pace either.
The driver was American Le Mans Series racer Marc Basseng and it was the production car lap record in 2008 which has been beaten, I think it is currently held by a Radical.
I think you would be surprised how you wouldn't be frightened if you were being driven by a decent driver at those kinds of speeds. As long as you get into the car knowing and keeping in your mind you are sitting next to a gifted driver (who will probably not even be at 10 tenths with a passenger in the car) you would probably enjoy the experience. You also just need to keep in your mind that he will brake LONG after you think he should have done and turn into the corners MUCH faster than you think is possible!
I have been driven round the Dubai Autodrome by Stefan Mucke in an Aston Martin and I have been driven round Silverstone by my own driver Tom in our G50 and both were enjoyable experiences.
In fact when we do passenger rides days everyone without exception gets out of the car saying it is one of the best experiences of their life!