i've known a few guys who have leant Tiff their cars for filming, only for him to batter the nads out of the car like he stole it. I also remember poor Simon Norris having to rebuild his engine after Tiff tried to beat the caravan pulling record in the Norris Designs Evo...
.. after being told to not bring on the NOS until after 5k rpm (or so).. Tiff new best, hit the NOS button at 3k rpm or so and blew the engine up. Not only a £20k engine repair, but a ruined reputation.
He can half drive though!! (just not drift that well)
Rich