A smoking car is a vehicle that is emitting smoke, which can be harmful to both the environment and human health. There are several other terms that can be used to describe a smoking car, such as a car with an exhaust leak, a car with a smoking engine, or a car with a burning smell. It is important to address any issues with a smoking car as soon as possible, as these symptoms could be indicative of a larger problem with the vehicle. Regular maintenance and inspection can help prevent a smoking car from being a danger on the road and can keep drivers and passengers safe.