Pending Change in my Future

Next Tuesday, I'm driving from Detroit to Ames, IA. I like Ames. Ames is a sweet place. I did my undergrad degree at Iowa State. For some reason, when I graduated, I never thought I would go back, even though I love the place. So I'm a little bemused because next Tuesday, I'm going to Ames to interview with the microbiology graduate program. I applied in the winter for the PhD program there. Initially I thought about applying to some other schools, but the more I looked, the more I realized that I didn't want to go anywhere except back to Iowa State. So I said 'to hell with it' and have staked all of my chances at even higher education on ISU. Since I've made to the interview stage, I've already passed the first cut of applicants. At this point I'm not even sure there is a second cut to be made, or if it's pretty much a given. (For the record, interviews did make a difference at Wake Forest, but if you were interviewed you were in at UMass, so I've experienced it both ways.)
Obviously, I am nervous as hell. I have an anxiety disorder to begin with, so I already fight with myself not to indulge in giant anxiety spirals of destruction. This is hard not to freak out about. Not only to I have to run the interview gauntlet, but I'm driving out there and back alone, which makes me worry about everything from the car breaking down to getting lost and ending up in Kentucky instead. Then of course once I get there, I have to run the interview gauntlet without sounding like an idiot, and there's always the question of whether I will be interrogated about the Great Georgetown Debacle of 2008-09. So yeah. I'm nervous.