Move over carbon fiber! Researchers at the University of Texas at Dallas and Australia's CSIRO have developed a process to produce carbon nanotube sheets at commercially useable rates. Made up of "forests" of nanotubes, each about 1/10,000 the diameter of a human hair, the transparent nanotube sheets have strength/weight ratios far greater than steel, and a variety of interesting electrical and thermal properties.
Aside from its structural properties, which should lead to stronger and lighter composite structures for racecars (always a good thing), the high thermal conductivity of the nanotube material could aid in engine cooling.
But wait, there's more! The material has strong microwave absorbing properties. Hmmm. Strong, clear films that absorb microwaves... How about a clear bra for your car that makes it invisible to radar speed traps! Taking stealth to the streets!