The Volkswagen Schwimmwagen was a popular amphibious vehicle used by the German army during World War II. It was based on the Volkswagen Kübelwagen and was produced in large numbers. The Schwimmwagen had a unique hull design that allowed it to move through water, and it was used for a variety of tasks, including reconnaissance, transportation, and rescue. Today, only a few Schwimmwagens remain, and they are highly sought-after by collectors.