Carbon tub's been around for 20+ years, yet the actual filtering is not really happening to a "general" automotive level. Mainly because the mass production manufacturing is next to impossible on the scale that normal cars are made. Lotus Elise's chassis was made strong, light and EASY to make. Most carbon composite structure is anything but easy to make. While its true that there are more and more individual components are made of this stuff, for the technology to really go to the basic level of automotive something no less of a huge manufacturing breakthrough have to happen first....
University of Toronto Formula SAE Alumni 2003-2007
Formula Student Championship 2003, 2005, 2006
www.fsae.utoronto.ca