1.First ,take a plain cloth and wipe all of your vehicle's dust
2.Then take another cloth and dip in a water,so that its wetness should be 2/5 of its dryness(partially wet).
3.Now wipe the vehicle again,Use high pressure to clean off chrome plated eg:handle,exhaust,bumper etc.,
4.Take the same cloth and some oil , wipe it again.
That's it .you can save plenty of water with this technique.