Malaysia Airlines Flight MH370 went missing Saturday with 239 people on board. It is not yet known what happened to the plane, but the passengers' and crews' families were expecting the worst. Take a look at the deadliest plane crashes in history.
The INRIX Traffic Scorecard uses a number of factors, such as total number of hours wasted sitting in traffic, to analyze which cities have the worst traffic congestion. Find out which cities have the worst traffic in the world.