General Motors MPG Polymer Sodium 
Green Car Congress
MARCH 18, 2013
Rated at an SAE-certified 420 horsepower (313 kW) and 430 lb-ft of torque (583 N·m ), it is the most powerful V-6 ever from General Motors. GM estimated fuel economy for the CTS with Twin-Turbo is 17 mpg city (13.8 l/100 km) and 25 mpg highway (9.4 —Richard Bartlett, assistant chief engineer for the 3.6L
Tony Karrer Delicious EVdriven
APRIL 28, 2009
The electric car features three different battery options, two different Lithium-based (LI) systems – A123Systems and Enerdel as well as a Sodium-Nickel battery Zebra (Mes-Dea). The modular, front-wheel-drive battery electric car has dent-resistant polymer-plastic body panels mounted on an aluminum frame and a steel chassis.
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