Cummins Westport Inc.

Cummins Westport Inc.
Westport Innovations Inc.
TSX : WPT

Westport Innovations Inc.

October 26, 2006 09:01 ET

Cummins Westport Completes First Commercial Sale of 2007 ISL G to Sacramento Regional Transit Authority

VANCOUVER, BRITISH COLUMBIA--(CCNMatthews - Oct. 26, 2006) - Cummins Westport Inc. ("CWI"), a leading provider of high-performance alternative fuel engines for the global market, announced today the first commercial order of CWI's industry-leading ISL G natural gas engine from Sacramento Regional Transit of Sacramento, California. The order is for 91 ISL G engines to be installed in 40' Low-Floor Buses in 2007.

"We're very pleased that Sacramento Regional Transit is to be the launch customer for the ISL G," said Gordon Exel, CWI's Vice-President and General Manager, Americas. "Sacramento has operated natural gas vehicles for over twelve years and is considered to be a trend-setter in the industry. The ISL G is the most advanced natural gas engine available and will feature NOx and PM emissions that will meet 2010 emissions guidelines while at the same time providing improved performance and fuel economy."

"We have been very satisfied with the Cummins Westport products currently in our fleet," stated Ned Fox, Sacramento Regional Transit's Director of Maintenance. "We decided to purchase the ISL G-powered vehicles because they will deliver improved performance while producing the lowest emissions in the industry. Sacramento Regional Transit is committed to delivering the best service to our customers while preserving the environment for future generations."

About The Cummins Westport ISL G

The ISL G will surpass EPA and CARB 2007 phase-in levels and meet 2010 emission standards of 0.2 g/bhp-hr NOx and 0.01 g/bhp-hr PM at launch in 2007. Based on the Cummins ISL, the ISL G leverages Cummins proven Exhaust Gas Recirculation ("EGR") and stoichiometric combustion allowing for the use of a three way catalyst, which is maintenance free and has been in common use in passenger cars since the 1970s. In addition to delivering ultra low emissions, the ISL G, with ratings from 250 to 320 horsepower, will deliver increased thermal efficiency and over 30% higher low-speed torque compared with today's "Plus" engines. More information about the ISL G can be found at: http://www.cumminswestport.com/products/islg.php.

About Sacramento Regional Transit

The Sacramento Regional Transit District operates 97 bus routes and 36.87 miles of light rail covering a 418 square-mile service area. Buses and light rail run 365 days a year using 76 light rail vehicles, 254 buses powered by compressed natural gas (CNG) and 17 shuttle vans. Sacramento Regional Transit has been operating natural gas vehicles for over 12 years.

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. 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). www.cumminswestport.com

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.


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