Anti Joke

Two trains, each having a speed of 30km/h, are headed at each other on the same straight track. A bird that can fly 60km/h flies off the front of one train when they are 60km apart and heads directly for the other train. After reaching the other train, the bird flies directly back to the first train, and so forth. What is the total distance the bird travels before the train collide?

Who cares about the bird if two trains are going to collide? You need to call this in immediately.