There are many private highways in the United States. The Philadelphia and Lancaster Turnpike, begun in 1792 between Philadelphia, Pennsylvania and Lancaster, Pennsylvania was the first major American turnpike. According to Gerald Gunderson's Privatization and the 19th-Century Turnpike, "In the first three decades of the 19th century Americans built more than 10,000 miles [16,000 km] of turnpikes, mostly in New England and the Middle Atlantic states. Relative to the economy at that time, this effort exceeded the post-World War II interstate highway system that present-day Americans assume had to be primarily planned and financed by the federal government." Because electronics did not exist in that era, all tolls had to be collected by human cashiers at toll booths, creating high fixed cost