District of Columbia

Tysons Corner is hoping to go from a 9-to-5 work farm to a 24-hour city.

A newly-designed truck known as the "Pothole Killer" can fix a pothole with the flick of a wrist (VIDEO).

Washington D.C. transit officials are planning to allow retail vendors to set up shop in some of the city's train stations. Proponents say the move could aid security by putting more "eyes" on the system.