Not a huge fan of enclosed spaces. My nightmare as a kid was the idea I might be forced to go caving and be told to dive into the underwater river under the rock with the promise that you'll come up into another cave. Surprisingly this hasn't (yet) been a feature of adult life!
I have a license but I don't drive because I am unco-ordinated and was too anxious when I was younger .... perhaps because my Dad taught my Mum to drive with us kids unrestrained in the back of an old van and we ended up in a ditch.
Otherwise I am increasingly not really scared of anything. Too much **** has already happened.