history: I always get nervous when I drive. The possibility of getting into a car accident is nerve wrecking. I always get nervous when I drive. The possibility of getting into a car accident is nerve wrecking. I hate driving_comma_ I avoid it as much as possible. 
current: I think it has to do with seeing a lot of car accidents when I was little.
next: Mine was from being in one and just being nervous about having to be in charge of things.