Brian here - it is the same RRSport on a spike that your web link shows a photo of. It has had the engine and gearbox stripped out and looks best when the base plate is covered with bark or other comoflauge. It was first used (i think) at the International selections (outside the food/hospitiality tent) in the car park at Eastnor Castle. We all ended up posing next to it as it was so impressive, especially at night all lit cleverly!It was a test car i believe, that was going to be scrapped, when someone decided to do that to it. I think it might have been (i'm guessing now) the D3 team, who are the organising minds behind all of the G4 challenges and stunts. Clever guys - they hung a RRSport by 4 wires over the LR stand at the Goodwood Festival of Speed too!
Brian.