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Nissan Reconfirms Strategic Role of ADAMS Functional Virtual Prototyping

21 April 2000

Nissan Motors Reconfirms Strategic Role of ADAMS(R) Functional Virtual Prototyping With $500,000 Software and Service Order to Mechanical Dynamics
    ANN ARBOR, Mich., April 19 Nissan Motors of Japan has
reconfirmed the strategic role of functional virtual prototyping in its
product engineering process with a $500,000 order for ADAMS(R) mechanical
system simulation software and services from Mechanical Dynamics, Inc.
(Nasdaq: MDII).  The order was placed during Mechanical Dynamics' first
quarter, ended March 31, 2000.
    Nissan ordered annual licenses of ADAMS(R)/Car and ADAMS(R) Full
Simulation Package, and consulting services with Mechanical Dynamics Japan
K.K., the company's Tokyo-based subsidiary.  Nissan is one of the largest
ADAMS/Car users in the Asian region.
    "As an ADAMS user for more than 14 years, Nissan's continuing commitment
to ADAMS underscores the competitive advantage functional virtual prototyping
provides to automotive manufacturers," said Robert R. Ryan, president and
chief operating officer of Mechanical Dynamics.  "We look forward to an even
closer relationship with Nissan, helping them reduce development costs, manage
design risks, and get to market faster with world-class vehicles."
    Akira Takagi, manager, CAE systems, of Nissan Motors, said, "Functional
virtual prototyping with ADAMS and our customized ADAMS/Car has established
ADAMS as an integral part of Nissan's engineering process.  Simulation allows
us to assess vehicle designs on a system level early in the process, which
leads to optimal designs faster and at lower cost."
    ADAMS(R)/Car, a specialized simulation environment for vehicle
development, is a key component in Mechanical Dynamics' Functional Digital
Car(TM) concept, which allows simulation of a complete vehicle including
chassis, engine, driveline, and body.  In addition to providing answers on how
the overall system and its components move, the Functional Digital Car gives
users an understanding of how that movement affects packaging, comfort,
vibration, noise, and component durability.
    Mechanical Dynamics pioneered the field of mechanical system simulation
with its market-leading ADAMS(R) software, and remains committed to extending
the capabilities of this technology to benefit manufacturers in every industry
worldwide.  Engineering teams use ADAMS to build and test functional virtual
prototypes of their complex mechanical system designs.  Mechanical Dynamics
also offers extensive implementation services, including consulting and
training.  In this way, the company partners with its customers to help reduce
the time, costs, and risks of the product development process and meet the
"Smarter to Market(TM)" challenge.
    Except for historical information contained herein, some matters discussed
in this news release constitute forward-looking statements which involve risks
and uncertainties that could cause actual results to differ materially from
those projected.  These include possible delays in developing, completing, or
shipping new or enhanced products, as well as other risks or uncertainties
that are detailed from time to time in reports filed by Mechanical Dynamics,
Inc. with the Securities and Exchange Commission, including Mechanical
Dynamics, Inc.'s registration statement on Form S-1 and related prospectus
dated May 14, 1996 and the "Risk Factors" described therein.
    Additional information about Mechanical Dynamics can be obtained by
writing to the company at 2301 Commonwealth Boulevard, Ann Arbor, Michigan
48105.  Phone: 734-994-3800.  Fax: 734-994-6418.  E-mail: info@adams.com .
World Wide Web: http://www.adams.com .

    ADAMS and the Mechanical Dynamics logo are registered trademarks of
Mechanical Dynamics, Inc.  All other company, brand, or product names are or
may be trademarks of their respective holders.