You should not pay for the heavy repair costs, but your warranty can take care of it.
The main advantage of running your car on water, you can reduce fuel consumption up to 50%! The other advantage is your car can reduce emissions of carbon exhaust as compared to conventional gasoline cars.
However, NAFTA cars (Free Trade Agreement North American) are shipped back and forth within the catchment area of NAFTA (USA, Canada and Mexico) duty- and additional taxes.
There are car rental and trip interruption benefits with an extended warranty.
Try to find an extended warranty of the car that is effective at the time he bought it, or the day of the guarantee of the automaker ends.
The engine cooling system seals also are not covered unless you purchase the Master Plan Garde top-of-the-line.