Should I bring my car here?

Just before I attend this course, I decided to drive and bought a beautiful luxurious second- hand Avante cause I thought I would be transferred to a high school, but I came here instead( so happy). Well, I have driven my car only for 2 weeks and left it in Ulsan. My problem is I'm not that confident in driving. I'd really like to practice how to drive well during the weekend, but I'm too afraid to drive for that long time in expressway. It's obvious that i can't afford to practice driving when I go back to school which make me get in trouble for some time. I want to prevent that situation from happening. What should I do?--!