Cummins Westport to Supply Indian-Manufactured B Gas International Engine for Demonstration Bus Project in New Delhi, India.

VANCOUVER, British Columbia -- Cummins Westport Inc. ("CWI") today announced the initiation of a one-year demonstration of clean transportation technology in New Delhi, India which will include six compressed natural gas (CNG) -fuelled buses powered by the Cummins Westport B Gas International engine, which is now being locally assembled in India for domestic and export markets. The demonstration is part of a Canadian consortium including CWI, ATF Advanced Technologies & Fuels Canada Inc. ("ATFCAN") and Dynetek Industries.

The project will integrate technologies and products from CWI and Dynetek to demonstrate Canadian natural gas vehicle technologies for the Indian market, including the B Gas International engine and fuel storage systems.

"CWI is excited about collaborating with our Canadian partners to bring CWI advanced CNG engine technology to this bus demonstration project in New Delhi," said Guan Saw, President of Cummins Westport. "We are thrilled to work with Tata Motors Ltd. ("Tata") in this project as Tata will be installing our Indian-manufactured CWI natural gas engines in their buses. The demonstration project in New Delhi will provide further impetus to reduce air pollution in the city as New Delhi will be hosting the Commonwealth Games in 2010."

With nearly 10,000 CNG buses in service, Delhi has the largest clean natural gas bus fleet in the world. Air quality in New Delhi has improved dramatically since a Supreme Court order in 2002 mandated the city's entire bus fleet to convert to cleaner-burning compressed natural gas (CNG).

About Cummins Westport Inc.

Cummins Westport Inc., a joint venture of Cummins Inc. (NYSE:CMI) and Westport Innovations Inc. (TSX:WPT), manufactures and sells the world's widest range of low-emissions alternative fuel engines for commercial transportation applications such as trucks and buses. Cummins is a global power leader in engines, electrical power generation systems and related technologies. Westport Innovations is the leading developer of technologies that allow engines to operate on clean-burning fuels such as natural gas, hydrogen, and hydrogen-enriched natural gas (HCNG).

About Tata Motors

Tata Motors, the flagship company of the Tata Group, is India's largest automobile company, with revenues of US$ 4.7 billion in 2004-05. With over 3 million Tata vehicles plying in India, it is the leader by far in commercial vehicles and the second largest in passenger cars. It is also the world's fifth largest medium and heavy truck manufacturer and the second largest medium and heavy bus manufacturer. Tata cars, buses and trucks are already being marketed in several countries in Europe, Africa, the Middle East, South Asia, and South East Asia and in Australia. The company acquired the Daewoo Commercial Vehicles Company, Korea's second largest truck maker, in 2004. In 2005, it acquired a 21% stake in Hispano Carrocera, the reputed Spanish bus and coach manufacturer.

About ATF Advanced Technology & Fuels Canada Inc. (ATFCAN)

ATFCAN commercializes clean energy technologies and provides markets with integrated alternative energy solutions to help clients reduce greenhouse gas emissions and environmental pollutants. By providing technologies for mobile and stationary applications that use local resources, ATFCAN helps increase energy security. Natural gas, bioenergy, renewable energy, efficient power generation systems and hydrogen are all part of ATFCAN's energy portfolio. A not-for-profit organization, ATFCAN promotes strategies that are cost-effective and tailored to the markets they serve.

About Dynetek Industries Ltd.

Dynetek Industries has been developing, manufacturing and marketing advanced lightweight fuel storage systems for compressed hydrogen and compressed natural gas (CNG) for low-emission CNG vehicles since 1991 and develops the world's leading alternative energy fuel storage cylinders and fuel storage systems.

Note: This document contains forward-looking statements about Cummins Westport's business, operations, technology development or to the environment in which it operates, which are based on Cummins Westport's estimates, forecasts and projections. These statements are not guarantees of future performance and involve risks and uncertainties that are difficult to predict, or are beyond Cummins Westport's control. 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. Cummins 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.

Westport Innovations Inc. (TSX:WPT)