By the way, the most famous scene in this movie contains the jump from the bus through the gap on the freeway. In fact, the bridge was completely put together — it’s wasn’t until later that it was removed digitally. A flock of flying birds was added digitally too. But the bus really did take off in this scene, and a special ramp was built for these purposes. The bus reached a speed of 61 mph and traveled 109 feet up in the air. Moreover, its front wheels suddenly reached an altitude of 20 feet off the ground, which was higher than anyone had expected, including the cameramen. It resulted in the front part of the bus going out of the frame.