It's a car, it's a boat, it's an Amphicar! Designed to operate on land and in the water, the German-made Amphicar landed on US shores between 1961 and 1967. It was the only civilian amphibious passenger car to be mass produced. Total production was 3,878 and some 3,000 were imported into the US.
It had a rear engine and two propellors, and came in four colors: Beach White, Regatta Red, Lagoon Blue and Fjord Green. All of them were convertibles and in the water, the front wheels acted as rudders. Amphicars have crossed the English Channel in 20 ft. seas. In Berlin, police used a few Amphicars for search and rescue. Apparently, it was even possible to water ski behind one. Slowly.