Yeah, sport mode doesn't really let you drift or anything, it just lets you drive the car hard. You can add throttle in a corner to the point where you feel a little suggestion of slip, like the rear end is just smearing a little bit around the corner, but the computers will stop you as soon as you get any visible yaw rate going.
Sport is perfect for street driving-- just enough leeway to let you enjoy yourself. If you want to go sideways in the rain / snow / whatever you just have to turn it off (as everyone's said, hold down the off button until you get the two amber lights).
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Stang70Fastback I liked your parking lot video :3