Great job Gary - looks very much like a slimmed down G46 to me.
Loving the exposed frame on the inside, I'd say it reminds me of a Maserati Birdcage but the welding on yours looks better.
If you use that as a demonstrator you should get some decent orders in quickly, if you choose to sell it on it should make well over £20k.
Either way, very well done on creating another great looking car.
