Sales porter opportunities

Recently, I decided I was going to take a semester break from college to sort out my mental health and social anxiety. It was a very difficult decision but I felt like it was right for me. I’m not positive what my plan is after the semester is over. I may transfer to a school close to home, or stay working. But, over the summer I worked as a sales porter for a BMW dealership working 40 hrs a week and making 15 an hour. I loved it. Well now I’m going back to that job working again while going to therapy and trying to sort out my mental health issues and depression. I am looking forward to it, but am wondering if there could be a future at that dealership for me? I love cars and love driving, but obviously being a porter will not be a financially stable career, but if there is a chance I would be able to work my way up to other positions then it is something I could possibly stick with. Just wondering how common it is for porters to go up in position? Obviously I’m going to have other plans, but I just don’t know what I want to do with my life at all right now, I’m only 18 about to turn 19, but I still feel like I gotta figure something out.