Finding yourself with a flat tire and no spare — or without the means to install one — can be a serious, perhaps even life-threatening problem. FlatterUP can get you going again by taking air from the three inflated tires and equalizing their pressure in all four tires. This is done by connecting the product’s polyurethane hose to the four valve stems. Provided the flat tire doesn’t have a hole that simply drains the air from the other three tires, this could allow you to safely reach the closest service station or your home. Inflation takes about two minutes and works on all sizes of cars and trucks. FlatterUP requires no external power source and works in hot and cold weather. Get full details at www.flatterup.com and purchase for $50 from www.amazon.com.