I have a sort of strange one. When I'm travelling down the road, and there is a lane I am about to merge in, if there is another car on the other side of that lane that could possibly hit me if they decided to suddenly merge with no signal (which happens a lot around here) I am actually terrified it will happen. It's so bad that sometimes I'll even speed up/slow down so I have a completely open space across every lane on the highway before merging =\