The first streetcars, which were drawn by horses, were introduced in New York City. The first electric streetcar system for urban passenger service in the US was introduced about 50 years later in Cleveland. The use of streetcars expanded in the US until World War I. Since then, most have been replaced by buses, although many still remain in use, and new streetcar systems have been introduced in some cities. What is the difference between a streetcar and a trolley? Discuss