It wasn't completely done, when it was last displayed at a carshow in January. Then, discontinued about early May. You'd have to ask Peter whether it was finished, and if he sold it (to pay off debts, maybe?)
Go to the FactoryFive forums and read. Some of those guys build their own GTM cars. Not only was the R not finished (even the air vents weren't cut in) but the build didn't impress them much at all...specially at its $145,000 (theoretical, since it wasn't offered for sale at that time) price point, when the bare kit sells for around $20k......
I posted a link to the old FF thread about four days ago....