Superhighways, also known as expressways or freeways, are wide, multi-lane highways that connect cities and other major destinations. These high-speed roads offer fast and convenient travel, making them an essential part of modern transportation infrastructure. In addition to their primary function as thoroughfares, superhighways can serve as economic lifelines for regions along their routes by promoting commerce and creating jobs. Some other synonyms for superhighways include motorways, autobahns, turnpikes, toll roads, and throughways. Each term conveys a slightly different nuance, but all refer to large-scale highways designed to move traffic quickly and efficiently.