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Suburban Terror: Hennessey offers upgrade packages for GMC SUVs

Lest you think that Hennessey Performance Engineering will only tune up your Dodge Viper or Cadillac CTS-V, feast your eyes on this little number showing one of the company's souped-up SUVs taking on a 2011 Nissan GT-R. It's really an unfair fight: The Cadillac Escalade sports a 6.2-liter V8 which in stock form makes about 400 hp. But Hennessey, not looking for a beatdown, drops a twin-turbocharged 427 cubic-inch LSX engine with high-flow cylinder heads, intake and exhaust upgrades, a performance camshaft and a laundry list of other parts to bring the truck's output to 1,000 hp.

JE Designs turns up the power in Touareg hybrid

JE Designs unveiled its freshly tuned 440-hp Volkswagen Touareg hybrid on Friday. The German tuning company boosted the Touareg’s output from 380 hp to 440 hp by optimizing the management of the 3.0-liter engine. The hybrid’s electric motor remains untouched.

Japan quake threatens to delay U.S. output of Nissan Leaf EV

The March 11 earthquake in Japan could force Nissan to delay the start of U.S. production of its Leaf electric vehicle, now scheduled for late 2012. “The earthquake is putting us in a very difficult situation,” said Hideaki Watanabe, head of Nissan's Global Zero Emission Vehicle Business Unit.