Shivering Brits who want to escape the cold can now warm up in this hot tub - that doubles as a boat. The lavish tub seats six adult bathers and has a 24-volt electric motor that powers the vessel to a top speed of 5 mph on calm water. An integrated diesel-powered boiler with an adjustable thermostat heats the  water to a maximum 40 degrees Celcius (104F)
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