Westport Acquires Clean Energy’s Natural Gas Vehicle Business, BAF Technologies and ServoTech Engineering, to Expand Ford

  Westport Acquires Clean Energy’s Natural Gas Vehicle Business, BAF
  Technologies and ServoTech Engineering, to Expand Ford Product Portfolio and
  Dealership Coverage; Commits $5 Million to Co-Marketing Program with Clean

Business Wire

VANCOUVER, British Columbia -- June 28, 2013

Westport Innovations Inc. (TSX:WPT) (NASDAQ:WPRT), the global leader in
natural gas engines, today announced that it has acquired BAF Technologies,
Inc. (BAF) and its subsidiary, ServoTech Engineering, Inc. (ServoTech),
subsidiaries of Clean Energy Fuels Corp. (NASDAQ:CLNE) for $25 million in
Westport stock. Westport and Clean Energy also announced a $5 million joint
marketing and sales program.

Westport believes that the amalgamation will create the largest product
portfolio and largest market presence in the North American light duty natural
gas vehicle (NGV) space. Specifically, Westport secures its position as Ford’s
largest partner under the Qualified Vehicle Modifier (QVM) program with over
10 products and approximately 150 Ford authorized dealerships. The transaction
allows both Westport and Clean Energy to focus on the significant growth
opportunities as natural gas emerges as a global fuel for transportation.

“We welcome the BAF and ServoTech teams to Westport,” said Ian Scott,
Executive Vice President of Westport. “BAF has established a strong portfolio
of natural gas vehicle products and customers over the past decade. With
natural gas increasingly seen as a major transportation fuel around the world,
we believe the combination of this new teams’ market experience and Westport’s
technologies, scalable manufacturing processes and quality control systems
will help create the type of products needed to deliver an OEM-quality vehicle
experience to our customers.”

BAF supports clients with vehicle conversions through the Ford QVM program and
aftermarket conversion products, alternative fuel systems, application
engineering, service and warranty support. ServoTech offers a total
engineering solution from initial concept phase to prototype hardware and
final prove-out, including design and development of electronic products,
software development, automotive exhaust simulation and testing,
spark-ignition gasoline and diesel emissions technology, and offers technical
training and education in a variety of subject areas.

Currently, Westport exclusively installs the natural gas Westport WiNG™ Power
System on the Ford F-250 through F-550 series at its assembly center in
Louisville, KY. This acquisition increases Westport’s product range with the
Ford line to include transit, cargo shuttle and taxi vehicles and dedicated
natural gas vehicles for markets such as California. BAF has been producing a
broad list of natural gas vehicle conversions for more than a decade and
recently produced its 20,000^th compressed natural gas (CNG) vehicle
conversion. Westport will continue to install the Westport WiNG Power System
and the increased volume of orders expected through BAF will create economies
of scale, and the BAF network will allow more flexibility in producing
speciality configurations.

Transaction highlights include:

  *$25 million payable in shares of Westport’s common stock on closing at a
    price of $30.62 based on a 10 day volume weighted average, subject to

BAF & ServoTech highlights:

  *Trailing 12 months revenue of $20.9 million to April 30, 2013
  *Long list of Ford QVM products including but not limited to:

       *Ford Transit Connect (EPA approved, CARB pending)
       *Ford E-250/350 (EPA & CARB approved)
       *Ford E-450/550 (EPA & CARB approved)
       *Ford F-250/350 (EPA & CARB approved)
       *Ford F-450/550/650 (EPA & CARB approved)
       *Ford F-59 (EPA & CARB approved)

  *Unique capabilities, deep industry experience and knowledge
  *As a qualified calibration modifier (QCM), ServoTech has preferential
    access to Ford engine controls. ServoTech also brings a substantial
    technology portfolio around diesel emissions control, diesel dual-fuel
    operation and other alternative fuels capabilities.
  *ServoTech engineering center is in close proximity to Westport’s Detroit

“We are extremely pleased with our original investment in BAF and the growth
it has achieved over the last five years,” said Andrew J. Littlefair,
President and CEO, Clean Energy. “This is a great opportunity for Clean Energy
to sharpen our focus on fuel solutions as the market for NGVs quickly builds
momentum. Westport will deliver great products, and we at Clean Energy will
build the fuel infrastructure to fuel the vehicles. Our new marketing
partnership expands our long-standing relationship and alliance as we worked
together over the past decade.”

Westport Enters New Marketing Agreement with Clean Energy

Westport has committed $5 million to a new co-marketing program aimed at
increasing the natural gas vehicle market, and will allow Westport to provide
purchase incentives for fleets, including fuel credits, and includes a
commitment from Clean Energy to purchase Westport products.

Highlights of the new marketing agreement include but are not limited to:

  *$5 million payable in March 2014 as payment for co-marketing activities by
    Clean Energy over the next two years
  *Clean Energy will provide 750,000 GGEs (gasoline gallons equivalents) of
    CNG, to be used by Westport as marketing and “bundling” incentives. Fuel
    is useable anywhere in the Clean Energy network of CNG fueling stations
    until December 2015.
  *Clean Energy will provide support for Westport product sales and marketing
  *Westport and Clean Energy will collaborate on specific customer
    situations, industry activities and joint policy positions
  *Clean Energy will commit to fulfill at least 50% of its light and medium
    duty natural gas commercial vehicle needs from Westport and BAF during the
    term of the marketing agreement

Westport does not expect to change its revenue outlook for 2013 at this time.

About Clean EnergyFuels Corp.

Clean Energy Fuels Corp. (Nasdaq: CLNE) is the largest provider of natural gas
fuel for transportation in North America. We build and operate compressed
natural gas (CNG) and liquefied natural gas (LNG) fueling stations;
manufacture CNG and LNG equipment and technologies for ourselves and other
companies; and develop renewable natural gas (RNG) production facilities. For
more information, visitwww.cleanenergyfuels.com

About Westport Innovations Inc.

Westport engineers the world’s most advanced natural gas engines and vehicles.
More than that, we are fundamentally changing the way the world travels the
roads, rails and seas. We work with original equipment manufacturers (OEMs)
worldwide from design through to production, creating products to meet the
growing demand for vehicle technology that will reduce both emissions and fuel
costs. To learn more about our business, visit westport.com, subscribe to our
RSS feed, or follow us on Twitter @WestportDotCom.

Note: This document contains forward-looking statements about Westport’s
business, operations, technology development or the environment in which it
operates, which are based on Westport’s estimates, forecasts and projections.
These statements include specifically, statements regarding the volume of
orders expected through BAF, transaction pricing and acquisition integration
matters. These statements are not guarantees of future performance, are based
on a number of assumptions and involve known and unknown risks and
uncertainties that are difficult to predict, or are beyond Westport’s control
including the development of competing products and technologies, availability
and supply of natural gas, price and supply of gasoline, timing of execution
of agreements with distributors and other counterparties, and other risk
factors and assumptions that may affect our actual results, performance or
achievements. Consequently, readers should not place any undue reliance on
such forward-looking statements. In addition, these forward-looking statements
relate to the date on which they are made. Westport disclaims any intention or
obligation to update or revise any forward-looking statements, whether as a
result of new information, future events or otherwise except as required by
National Instrument 51-102. The contents of any website, RSS feed or Twitter
account referenced in this press release are not incorporated by reference

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Westport Investor Inquiries:
Darren Seed
Vice President, Investor Relations & Communications
Westport Media Inquiries:
Nicole Adams
Director, Communications
Clean Energy Fuels Media Contact:
Patric Rayburn
Public Relations Manager
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