Extreme heat during summer heatwaves can transform vehicles into dangerously hot environments. A Hungarian newspaper, Blikk, warns that leaving certain everyday items inside a car can render them unusable or even pose a safety risk. High temperatures can cause damage to various products commonly stored in vehicles. The article highlights the importance of increased vigilance regarding items left inside cars during periods of intense heat. Specific items and potential dangers were not detailed in the provided text, but the overall message stresses preventative measures. Drivers are advised to be mindful of the potential for heat-related damage and hazards within their vehicles.