Cincinnati Streetcar. The Cincinnati Streetcar is an electric mode of transportation operating in its first phase on a 3.6-mile loop connecting key communities in the city's urban core.Running up to 18 hours a day and 365 days a year, the streetcar will be a vital complement to the city's existing Metro and other transportation systems.he Cincinnati Streetcar is an electric mode of transportation operating in its first phase on a 3.6-mile loop connecting key communities in the city's urban core.