The document provides instructions for what to do if experiencing a heart attack while alone in your car. It recommends coughing vigorously and repeatedly to keep blood circulating and help regain a normal heart rhythm until medical help arrives. Coughing squeezes the heart and lungs to get oxygen flowing until the 5 miles to the hospital can be traveled or the heart returns to its normal beating. It urges sharing this information to save others from potentially fatal heart attacks when alone.