The introduction of the electrical streetcar in Richmond, Virginia in 1887 by Frank J. Sprague marked the start of a new era of transportation-influenced suburbanization through the birth of the "streetcar suburb". The early trolley allowed people to effortlessly travel in 10 minutes what they could walk in 30, and was rapidly introduced in cities like Boston and Los Angeles, and eventually to all larger American and Canadian cities. There were 5,783 miles of streetcar track serving American cities in 1890; this grew to 22,000 by 1902 and 34,404 by 1907.