Ive tried getting in contact with Simon, but to no avail. There were rumours flying about that he gave a £50k cheque to Abbey and basically said "make it happen". Whether or not that's true is anyone's guess.
Would be nice if he did come back when he has the car up and running.
The spec he wanted for the car would have included all carbon panels etc and added up to over £100k. I think he realised that this would have a re-sale value a lot lower and therefore made the decision not to progress.
There are many of us who have spent enormous amounts of money on our cars over time without realising it and had we been confronted with the bill up-front might not have made the same decisions.