GM & QUANTUM Enter into Discussions to Establish a Business Relationship

    IRVINE, Calif., March 20 QUANTUM Technologies, Inc. today
announced that it has entered into discussions with General Motors
to establish a business relationship.
    QUANTUM is a world leader in the development of hydrogen, compressed
natural gas (CNG) and propane (LPG) handling and advanced gaseous storage
system technologies for manufacturers of fuel cell and internal combustion
engines.

    For more information, please contact:

    Alan Niedzwiecki, Executive Director, Business Development
    QUANTUM Technologies, Inc.:  Tel: (949) 399-4552

    Pete Barkey, General Motors Communications
    Tel:  (810) 986-6285; Mobile:  (248) 766-7450

    QUANTUM Technologies, Inc. is a wholly owned subsidiary of IMPCO
Technologies, Inc., .  QUANTUM is focused on the development of
enabling technologies for alternative propulsion and energy in emerging global
markets.

    General Motors conducts fuel cell research and development through its
Global Alternative Propulsion Center, employing more than 350 people at
facilities in Warren, Michigan; Honeoye Falls, New York; and Mainz-Kastel,
Germany.
    GM sees hydrogen as the best long-term strategy for its fuel cell
vehicles, with a clean gasoline as the best bridging fuel until a hydrogen
infrastructure can be put in place.  General Motors is concentrating
considerable research efforts into developing fuel cells that run on hydrogen
extracted from gasoline.

    Certain matters discussed in this press release contain forward-looking
information that involves risks and uncertainties that could cause actual
results to differ materially from current trends.  These include the company's
ability to design and market advanced fuel metering, fuel storage or
electronic control products, the company's ability to meet OEM specifications,
and other such risks as cited in the 2000 annual report on Form 10-K for IMPCO
Technologies, Inc. and other documents filed with the Securities and Exchange
Commission.