Recently, car fires have been occurring on city roads (47.3%) and expressways (17.2%). Depending on the traffic conditions on the road, the growth of these fires can be delayed until firemen or a pump car arrives at the scene. In this study, application and utilization methods were derived based on car fire extinguishing experiments. To this end, a suffocation effect was induced using a car fire blanket and without using water in the event of a car fire. A car was ignited, and the car fire blanket was applied for 10, 20, and 30 min during the peak of the fire to verify whether the fire could be extinguished. A partial fire was caused for the three experiments, which could be put out with a small amount of water. Based on the results of these experiments, i.e., car fires can be put out using a car fire blanket and an on-site utilization plan, a new technology is presented.