Audio problem: When the Statue of Liberty's head strikes the top of a distant building before landing in the street, sight and sound are simultaneous. There should have been an audible lag in the sound due to the speed of sound being only about 1000 feet per second. The absence of this lag would be acceptable in most movies but is inconsistent with the amateur home movie theme of Cloverfield.

Cloverfield (2008)
Ending / spoiler
Directed by: Matt Reeves
Starring: T.J. Miller, Lizzy Caplan, Jessica Lucas, Michael Stahl-David, Odette Yustman
After saving Beth from her crumbled building, Rob, HUD, Beth and Lily escape the buildings and board evacuation helicopters just as the giant creature attacks nearby. Lily is separated during the evacuation, with her escaping in a different helicopter. Flying above Manhattan as day breaks, Rob, Beth and Hud witness military planes attacking, and seemingly killing, the giant creature; however, the creature leaps out of the smoke plumes and swipes at their helicopter, causing it to crash in Central Park. Hud, Rob and Beth survive the crash, only to look up and see the creature towering over them. After the creature chews on Hud, killing him, Rob grabs Beth and the camera and hides underneath a bridge. He gives a final testimonial to the camera and tells Beth that he loves her. In the background, air-raid sirens begin to go off. A presumably nuclear explosion rocks all of Manhattan and seems to kill them both, and the camera is covered in rubble. The movie then cuts to a scene from Rob and Beth enjoying their Coney Island date a month before. During this, as the camera briefly focuses on the ocean, a meteor like object falls from the sky and hits the water in the distance, hinting at the creature's origin.
Odette
Trivia: In the Audio Commentary the Director shares that when Steven Spielberg watched the film before it was complete, he came up with the idea of the helicopter radio explaining "If you can hear the sirens, you're in the blast zone" and the sirens ringing at the end.





Answer: Whilst they have made a second film, 10 Cloverfield Lane, it does not have much, if anything at all, to do with the first film. So we aren't told what happened to Rob and Beth.
Alan Keddie