Kevin Douglas Announces Acquisition of Additional Common Shares of Westport
Innovations Inc.

LARKSPUR, CA, April 6 /CNW/ - Kevin Douglas of 125 E. Sir Francis Drake Blvd., Suite 400, Larkspur, California, 94939, has announced today that he acquired, through and on behalf of K&M Douglas Trust, Douglas Family Trust, James E. Douglas III, and Douglas Irrevocable Descendants Trust, 100,000 common shares of Westport Innovations Inc. ("Westport"), bringing the total holdings in Westport to 5,442,245 common shares or approximately 14.22% of the total common shares outstanding. The shares were purchased on the NASDAQ at a price of USD $17.76 per share or Cdn. $17.76 per share (using the Bank of Canada noon exchange rate for April 6, 2010). The shares were acquired in the ordinary course of the entities' investment activities. Kevin Douglas, through and on behalf of the four entities, may purchase or sell securities of Westport in the future on the open market or in private transactions, depending on market conditions and other factors material to their investment decisions.

For further information: Tim McGaw at [phone] or [email protected]