The Houston metropolitan area is vast, sprawling over 665 square miles. The 610 circular highway that divides the city is known locally as The Loop. Anything within The Loop is called downtown Houston. Most people who live and commute within The Loop use the Houston metro system. For longer journeys not possible by metro, there is a light rail and bus system to connect downtown with midtown. Many people do not use public transportation and prefer to drive. Journeys can be lengthy. Many people recommend making sure your vehicle's air conditioning works well and you have some music to accompany you.