Now I'm a middle aged bloke with three children and a mortgage I currently do about 1200 miles a year in mine. The old MOTs show 14,000 miles for each of the first two years after I got it on the road. Part of the reason was that it was my only car for about 16 months - went a bit over budget on the build and had to sell my Astra. Living near some cracking roads was another reason. The down side is that the fibre glass is now rather tatty and a significant number of parts have been replaced. It was off the road for 8 years when the children were young & underwent a slow refurbishment on the rare occasions where I had cash and/or spare time. Still, the children like using it on the school run when they get a chance, though not all at once I should add.
One main downer of using it as an only car was that as fun as it was the Westfield was not quite so special to drive after a while, though I did get to know it really well. Now when I get in it after commuting in the Mondeo all week I get that "oh yeah" feeling again.