The document describes what to do if you experience chest pain while driving alone and suspect you are having a heart attack. It recommends coughing vigorously every 2 seconds to keep blood circulating and help regain a normal heart rhythm until help arrives or the symptoms subside. Deep breaths before each cough get oxygen into the lungs while coughing squeezes the heart. In this way, heart attack victims can potentially get to the hospital when alone. The document urges sharing this information to help save lives.