I got to try out a prototype Carbon Fibre main chassis from Atomic Carbon this weekend for the first time, Ill stick some more photos and words up later this week (bit busy with the XX4 review as well).
This is very close to the production version, and is cut out (instead of milled) and so a lot cheaper than the previous chassis.
My car had electrical problems in the final, possibly dodgy switch, but i finished all 3 qualifiers well.
This chassis setup (CF top and bottom decks) is very stiff, certainly stiffer than the BJ4, I have to say it handled really well even on the ultra slippy polished floor.

Oh, and with all the Atomic Carbon products on there, the car really does look blinging awesome.