The large carbon fiber rear wing on the 2008 and later Dodge Viper ACR contributes 60 percent of its 7:1 downforce-to-drag ratio, giving the car high-speed steering and cornering stability. Take a look at this picture showing just how strong this wing needs to be in order to support the enormous downforces applied during high speed driving. Each half-shell of the Viper ACR’s rear wing comprises only four layers of epoxy/carbon fiber weave, without the support of ribbing or core.

For more information on the Dodge Viper ACR’s aerodynamics you can read though this in depth article on CompositesWorld: Composite wing key to high-speed stability.