The fondant airplanes worked great, for the most part. I was so used to working fondant on fondant, I got the pieces moist when I applied them. I didn't consider that the icing itself is very moist. What happened was the pieces began to "bleed" and color was running down from the planes on the sides. Like I said, live and learn.
Combine that with the whoops that happened during the drive, and we had a not-as-cute-as-I-wanted cake! But the birthday boy (and his mom) seemed to think it was great. So thank goodness for friends! LOL!