Nice one. I've still got the "selfish" mans version buried in the garage somewhere
Not used it for 4 years, keep meaning to get it recommissioned but never get round to it.
I think I've got a pair of tyres that you can have, part worn racetecs IIRC. I'll check next time I'm in the most untidy garage in the whole of Yorkshire.
Get in touch if you are ever in the area.