The Philadelphia event was organized to kick off a 100-city and Internet petition drive in support of the patients' bill of rights.

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At the event, HGST is comparing the power consumption between a helium-filled drive and an equivalent air-filled drive side-by-side, demonstrating a reduction in power consumption for the helium-filled drive of 23 percent.

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The new, helium-filled sealed-drive platform is being demonstrated today at the Western Digital Investor event in Irvine, California.

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When it was finally unveiled at a press event Winterkorn was furious after discovering a tiny paint flaw on one of the media test-drive cars, according to one colleague.

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Yoong and his team-mate Mark Webber of Australia, as well as former world champion Damon Hill, will also drive the two-seaters in the "Thunder in the Park II" event.

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