The purpose of this TV commercial is to bring to light Toyota's 'clean' technologies. The commercial is a metaphor for the respiration through the representation of a tunnel at the entrance of a city, which symbolizes nostrils. The Toyota entering the city represents inhalation. The old cars coming out of the city represent an exhalation. For the consumer, a city welcoming 'clean'. Toyota will always be less polluted than a city crowded with old and polluting cars.