It's not a Gould, the car is his own design as far as I'm aware. A few years back he had talked of trying to sell them and have his own class (obviously with a tamer engine) but I think it's more become the quest for the `ultimate` hill climb car.
Last time I saw it running was a good few months back when it broke 4th gear in its first or second run! Sounds awesome when it gets into its stride but the traction control really does sound horrible!!