Expire is not really the right term; but effectively yes. In general a cheque older than six months will be considered stale-dated and will not be honoured. Reference the Canadian Payments Association FAQ.
SKYACTIV is a brand name for a series of technologies developed by Mazda which increase fuel efficiency and engine output. The initial announcement of the SKYACTIV technologies include new engines, transmissions, body, and chassis, which appeared in Mazda products from 2011.
Microvision and Boeing Awarded $1.5 million Contract For Continued Development of Virtual Cockpit System. Microvision, based in Seattle, Washington, is developing and commercializing its VRD technology, which allows electronically generated images and information to be projected onto the retina of the viewer's eye.