I built one of these out of PVC pipe based on the pictures in the attached thread. I think there is a man on here that sells these as well. I set it in the bed of the truck and throw a bungee over it to make sure it doesnt move then hit the highway. It works great for me and it minimzes the hanger rash. I originally built it to hold two planes, but left one end loose so i could expand it. It now holds 4.

http://www.rcuniverse.com/forum/m_68...tm.htm#6801884