The opening scene shows a family driving on a highway bridge, singing along to Maroon 5 - Sugar. When the camera points out the front window, they are shown to be going exceedingly slow for a road this size, as if traffic behind them will soon start honking their horns, and a van extremely ahead of them is getting even further away. Then that van, about 15 car lengths ahead, is seen falling off of the edge, making the family scream in terror in response. Between their low speed and this large warning they had more than enough opportunity to stop before going off the edge. Then they are shown flying off at about double the speed, as if the dad had floored it to try to go off as fast as he could, instead of the more logical act of trying to slow down. He didn't even have enough room to accelerate to that speed. This entire accident is impossible.