Yes its a work of art I reckon
I was chatting to Will who works for Xtreme and they had to make the spine in a different design as it had too much flex in the rear of the car so I'm sure chassis stiffness has been well tested on the proto cars.
I'v seen it to on carpet in the hands of Will,Lewis,Ed at Martime Raceway and it went really really well.
We have been lucky in the South of England to see the car in action at the various big winter meetings, I'm sure if you search through some of the Maritime videos on youtube you will see Ed driving it in the A final 4wd races.