Not unlike GM's environmentally-dated Hummer division, already on the block, Chrysler's red-hot Viper unit could soon be up for grabs as well.

Hand-built in a low-volume modular process at the Conner Avenue Assembly Plant in Detroit, Dodge Viper is an inherent part of the long-standing Chrysler legacy. Not surprisingly, it is also one of the company's hottest items, with sales up 111 percent through July to 682 vehicles over 323 vehicles in the first seven months of 2007, The Detroit News reports. But even these seemingly impressive figures are insignificant within Chrysler's larger scope of operation. And though the Viper's awe-inspiring performance impelled by its 600-hp V-10 powerplant is truly unique, the 16 mpg fuel economy does little to help its cause.

"We have been approached by third parties who are interested in exploring future possibilities for Viper," said Bob Nardelli, Chrysler's chairman and CEO. "We have agreed to listen to these parties. We will do so keeping in mind the best interests of those who have shown tremendous support for the vehicle -- including employees, suppliers, dealers and a worldwide group of loyal Viper owners and enthusiasts."