Lastnight I observed a dude down the street in a Subaru WRX, he pulled into his driveway at about 1:30am and shut down the engine before he had even come to a halt. So in essence 0 seconds cool-down time. I normally wait at least 30 seconds whenever I drive my cars before switching off the engine, if I've been pushing it a bit I'll go up to 2 or 3 minutes. Am I missing something or is the Subie driver a bit of a fool???