Here’s the dilemma; I drive a crappy old Berretta and live in a semi-rural area where walking anywhere or public transportation is way out of the question. There a few girls I’d like to ask out, but whenever I’m in my car I curse and yell and scream like it was my job whenever even a small hiccup occurs. Last time I had a girl in my car I ended up violently cursing and yelling at other cars just for being at the same intersection. I figure this is a case of elevated road rage along with being very nervous and inexperienced with women. This fear of lashing out is preventing me from asking anyone out.
So I suppose the real question here is; how does one calm down and stay in control of your nerves when around a girl?

Understand that you cannot control the other cars. Since you cannot control them then why bother trying to. Also realize yelling and cursing while a girl you are trying to impress is sitting next to you won't help your cause.

But I would try to fix the problem of nerves and rage before you even think about asking girls out.