That's because for years it was called Metropolitan Toronto. Everything from Metropolitan Toronto Police to Metropolitan Toronto Zoo. It was 6 cities but it functioned as one so really.. you were headed to Toronto.Actually, people have always thought Metro as being synonymous with Toronto. Even signs on the 401 always signed Metro as if it were one city. While places like Cambridge and Vaughan, which have been amalgamated for decades, are still seen a collection of distinct places (especially the latter). Even Hamilton which has always had a city-and-suburbs relationship, is psychologically disunited.