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.
SKYACTIV Technology â for a new breed of cars. Mazda vs. Greyhound SKYACTIV i-stop Technology 2014. âi-Stopâ allows you to re-start almost instantly while leading to a significant improvement in fuel economy. Much like the greyhound, the ultimate sprinter, being aerodynamic and graceful.