Sealander

Who cares if your camper rolls down the hill and into the lake — you've got the Sealander (€15,000; roughly $20,500). This unique tow-behind solves the question of whether to bring the boat or the camper by functioning as both, thanks to a low-emission electric outboard motor, a fully-equipped interior with a cooking/washing module, a cooler, a heater, and seating that converts into a bed, all packed inside a watertight package that's sure to draw confused looks at the local boat dock.