Several decades ago, horse trailers (used horse trailers) were made of steel that would rust. Because the steel would rust, the trailers would quickly deteriorate and become unsightly and unsafe for hauling horses. By the late seventies and early eighties, several horse trailer manufacturers, such as Sooner, Featherlite, and Four Star, began building horse trailers made from aluminum to replace the old, rust-deteriorating steel trailers. After all, everyone knew that aluminum didn’t rust! Soon, horse owners were convinced that the new, all-aluminum trailers were the way to go. In years to come, it would become apparent that using all aluminum in horse trailers had some negative consequences. But, back in the late seventies and early eighties, those consequences had not yet become known.