GM's Volt

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Toyota Motor Corp, likely to claim the title of world's biggest automaker later this month from General Motors Corp, threw down the gauntlet to GM in a race for the next "green" car.

GM is designing the Volt to run 40 miles on battery power alone, with an on-board gasoline-powered engine as a backup.

The Volt would be outfitted with new lithium-ion battery packs, which are more powerful than the nickel-metal hydride batteries used in many hybrid cars. Lutz said the battery technology has shown no problems so far and a working lithium-ion battery pack for the Volt could be demonstrated by June 2008. But the Volt requires a complete re-engineering of a standard passenger vehicle, he said.

Environmental advocates see plug-ins as a way to cut fuel consumption and greenhouse gas emissions. The sharp increase in fuel economy the vehicles could also help automakers meet more stringent U.S. fuel economy standards.

GM's head of North American operations, Troy Clarke, later told reporters that GM may launch a plug-in version of its Saturn Vue sport utility vehicle in 2010, possibly making it the first commercially available electric vehicle.

"It could precede the Volt," said Clarke, adding the Saturn Vue would run 10 miles on battery power alone.

An official for Ford Motor Co said Monday its own tests on a plug-in car should last several years and are not based on being the first to launch an all-electric vehicle.

"This is not a case where we are being driven by first-to-market (strategy)," Derrick Kuzak, the company's global product chief, told Reuters at the show.

The fanfare at the Detroit show spans the green gamut from "hybrids" to futuristic technologies like fuel cells. But diesel was also touted as a "cleaned up" technology.

Cleaner diesel filters out more pollutants and for the first time meets smog pollution laws in all states, according to the Union of Concerned Scientists. Clean diesel also delivers power and gets better mileage than gasoline.

"It is a major step forward in fuel saving and we are going across the board to promote technology," said Dieter Zetsche, chief executive of Daimler AG and Mercedes.

Both Toyota and Japanese rival Honda Motor Co announced major expansions of diesels for the U.S. market.

(Additional reporting by Kevin Krolicki, Jui Chakravorty, Chang-Ran Kim and Nick Carey; Writing by Peter Bohan; Editing by Jeffrey Benkoe)

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This article was originally published on 2008-01-15
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