This "water-mobile" of 1947 was imagined to provide the best of both, with an enormous gas-guzzling six-wheeled amphibious vehicle.
It's pretty incredible that this vehicle could have been seriously proposed given its size. It had a stove, oven, shower, dishwasher, sink, fridge, freezer, bathroom, and a ton of seating. It was supposed to be 34 feet long and sleep up to six people.