Geezajob,
You must have been unlucky, I am not sure who you spoke to at the autosport show, but by the answers did seem unhelpful, Personally I would have been a bit miffed also. I first saw the car at the Autosport show about one and a half years ago, I was invited down to look at the car with my business partner by the garage I was dealing with, and on the stand was Lee Noble and Tony Moy, the people behind the Car, and they really couldn't have been more helpful, were also very easy to talk too.
You are right the noble isn't a super featherweight like the Exige and 340bhp/ton is a hell of a power to weight, but on driving it it is far from bulky, slighlty smaller than a 911 or 355, but still light at 980kg and packing a hefty punch at 320bhp giving it 321bhp/ton the performance is serious, 0-60 in 3.7 sec 0-100 in 9.4. It really handles like a dream as well, very controlable, from what other owners have told me the only thing quicker on a track is the Superlight R500 Caterham, which weighing only 460kg and 230bhp has an unbelievable 507bhp/ton, which nothing gets close too.
My advice, if you get the chance, drive one, I know most of the dealers have a demonstror now, so it not the factory test drive anymore they really do shame a lot of cars that are a lot more money. You may be tempted to add another car to the collection.
As for me and the Exige, I am very tempted, the noble isn't due til september, I could get one as a stop gap, I know they are about 25k second hand, which isn't bad and if the conversion is between 5-10k that would be a bargain, supercar, that I might keep. i am tempted to get rid of the 911 anyway when the noble arrives, which would leave an empty space in the garage, will just have to break it too the girlfriend, who drives it most any way
