Communication problems with parents?

All right well, I'm going to college next year for the first time. (kind of)

I've been in PSEO since I started high school, which is where you take college classes and high school classes at the same time. So while I've technically been in college, this will be my first time going to a University and being away from home.

My freshmen orientation is coming up, and I had originally planned to go with my mom and my friend and her mom. However, now my dad wants to come too. This is a slight problem because the car fits four, and taking two cars (One with four people, one with one person) would be wasteful because the school is so far away. Also, I don't want to attend the orientation with both my parents. I know this is exciting for them because I am their first kid going to college, but at the same time I really want a friend there to support me through this and experience this with me (She is going to be my roommate next year as well). Should I tell my dad my plans or should I just go with my parents? My friend and I hadn't made anything official yet so it's not like we promised to give her a ride and then we just change our minds.