well water in cars is used as a coolent cause its cheap efficent and found every where
it is used as a coolant
Water alone is not used as coolant for automobiles.
no
to seal water out of the inside, it is used on doors and the trunk.
to wash cars
typically, filters are used to clean air in both , however, in cars their also used to clean oil, and homes their used to clean water.
Water is not used in most modern cars, or at least is not recommended. If it is used, it is because it is cheap and easy to find and will do the job .
earth water wind & fire
There is no such thing as a water fueled car. Even steam cars used some form of fuel to create the steam. You can extract Hydrogen from water to power a car but as of this time 2015 there are no cars being produced that use water as a fuel.
good, cheap, efficient and available almost anywhere
Eethylene Glycol
There are at least 100,000 gallons of water involved in the manufacturing processes of a typical car.