Sorry late to the party on this one..... I'm the boring bastard sitting in the passenger seat, and I have to admit when I saw the video back that I thought the same thing!
I was calm because I had seen Tiff drifting the M3 all day and knew there wasn't a hope in hell of him crashing, I was too engrossed in the drive to worry about screaming like a little girl. It was great fun but also a little of a let down after having driven the Scuderia a few minutes before..... I think I was still shell shocked at how amazing that was! Ferrari was stunning even compared to the Lambo LP670 SV I drove the week before..... main difference is that the Scud instructor was happy for all of the revs to be used while the guy in the Lambo (also the owner of the car!) didn't allow more than about 6000rpm before asking for a gearchange.
Apologies for being a boring twat I'll try weeping with joy or pissing my pants next time