spotted this cool article over on VitalMTB, can't wait to see the video of this.
http://www.vitalmtb.com/photos/features/Danny-Hart-and-Ken-Roczen-Moto-MTB-Day,3194/Slideshow,0/sspomer,2
http://www.vitalmtb.com/photos/features/Danny-Hart-and-Ken-Roczen-Moto-MTB-Day,3194/Slideshow,0/sspomer,2