Daylight is a 1996 disaster film, starring Sylvester Stallone, Amy Brenneman, Viggo Mortensen, Dan Hedaya, and Danielle Harris. It was directed by Rob Cohen and released in theaters on December 6, 1996.
The film opens with a waste management firm in upstate NY trying to illegally dispose of toxic waste. Chemicals are loaded on three trucks bound for New Jersey. Meanwhile, a crew of diamond thieves steal a shipment of stones and a black Cadillac Seville. The thieves are pursued by NYPD and elude capture by heading to the Holland Tunnel (known in the film as the “Tunnel to New Jersey”). As the thieves enter the tunnel, the trucks loaded with toxic waste make their way into the tunnel as well. The thieves push their way past the traffic entering the tunnel, causing chaos as they make their way through the north tube.
As they weave and shove their way past traffic, the diamonds spill all over the floor of the car. As one of the thieves reaches down to get the diamonds, she pushes the gas pedal to the floor. The Cadillac accelerates wildly, and the driver loses control. The car hits the tunnel wall, and goes airborne, smashing into a booth which houses Port Authority police officers who patrol the tunnel, and smashes into one of the trucks carrying toxic waste. The truck explodes, setting off a chain reaction explosion that destroys the other two trucks.
The destruction of the trucks and their cargo creates a devastating explosion that causes the roof of the tunnel to cave in. Cars on the New Jersey end are flattened. Another explosion takes place, and the fire, fueled by the remaining oxygen in the tube, explodes into a fireball, rushing through the tunnel at hellish speed. The fireball devours everything in its path.
On the Manhattan end of the tunnel, former New York City Emergency Medical Services Chief, Kit Latura (Sylvester Stallone), working as a taxi driver, is preparing to drive into the tunnel when the entrance suddenly explodes. The entrance caves in, blocking the tunnel. He then races into action, trying to help whoever he can.
Summary via Wikipedia.