At the time I bought my Fiesta ST from Springfields in Knottingley they had an RS Focus in which was going to someone who had just had his RS Focus hi-jacked in this way (don't think there were guns involved though )

I always worry to be honest.... there aren't any other ST's in my area and the car does get a lot of attention.... when I am on my way home at night the doors are always locked and I am particularly wary when I get home looking for lurkers...... I know the ST isn't has high profile as the RS Focus/Cosworth but there will always a risk that someone might want it off me!