A survey after the 2016 Kumamoto earthquake found that many evacuees slept in their cars longer than in shelters. When sleeping in a vehicle, choose a flat, safe spot where the exhaust is not blocked and a toilet is nearby. The main risk is economy class syndrome: to prevent it, wear loose clothing, stay hydrated, ventilate the car, and do leg exercises. Sun shades provide privacy and psychological comfort. Keep an emergency kit in the trunk with a portable toilet, water, headlamp, sleeping bag, and compression socks. Cars with emergency power systems can supply electricity for phones and appliances.
