Gasoline tanks are containers designed to store fuel for vehicles, such as cars and motorcycles. They are typically made from materials like steel or plastic and are built to withstand pressure and prevent leaks. The size of a gasoline tank can vary, with most cars having tanks that hold between 10 to 20 gallons of fuel. These tanks are connected to the vehicle's fuel system, allowing gasoline to flow to the engine when needed. Proper maintenance is essential to ensure safety and efficiency, as issues like rust or damage can lead to fuel leaks, posing environmental and fire hazards.