Wash the tyres of ur cars with cold water each time u use it. This will double the life of ur tyres. For smooth movement of car vipers, rub the windscreen with a piece of soap.If ur car vipers do not work or u find them missing, as an alternative, rub half-cut potato on the windscreen. Rain water will not stay on it.Next time u change the oil on ur car, don't throw it away. Apply the engine oil to ur garden fence with an old brush. It is as effective as creosote for protecting the wood against insects and weather.Baking soda on a damp sponge quickly clears the traffic grime from a car's windshield, headlights and chrome accessories.. Rinse with clear water.A slice of potato rubbed on the wind screen of a car will prevent fog or rain from obscuring the driver's vision.