I agree he is somewhat crazy, but like a fox. When he is doing work that requires precision he can be trusted to give it his full attention (such as when he was working on that wing spar bolt for the Spitfire that was being restored), and when he is at the controls of any vehicle he is equally attentive. Jim, I think that you could watch this first episode as, although the van hits speeds close to 170MPH, it is smooth driving on a section of road 90 miles long and with long sweeping curves (although through "The Narrows" they had to slow down to 75MPH).
The van required a little bit of work, and the larger Ford engine that was fitted was somewhat tweaked (going from around 350BHP to just under 700BHP), and, as usual, Guy got his hands dirty (you see him using a CNC machine to manufacture an uprated aluminium impellor for the water pump, to more than double the flow capacity of the cooling system). That black Transit van looked menacing, but somewhat out of place (parked next to a Lamborghini Diablo 1/3 as high), and was, as far as I can recall, the first van to be entered into this race (but almost certainly not the last, going by how well it performed).