In this desert area we have less than 9 inches a year. The ground water is so full of minerals and chemicals your dish washer develops a layer of scale in months. That would seriously F%^* you engine up. In addition you cant even put a well in as all water has been alloted to certain uses including a minimum amount to protect fish. Many areas aroung the world have droughts on a regular basis so not enough to drink let alone power a car. California has been on 40% usage for 2 years what do you think would happen if all their cars ran on water too?