There's very little originality in this comedic effort that hasn't too many laughs. It's all there, the whole package: the meeting, the fall, the problem that arises, (the annoying buddy,) the airport finale, the informative neighbour, the oh-look-her-boyfriend-isn't-that-innocent-either so-it's-okay-for-her-to-leave-him-for-the-other-guy moment... (Notice the gap in the word there? The doors made me do it.) Then, should it all be there?
The only twists are the titular gimmick and the helpful cab driver. If they didn't have anything new to say - and, more importantly, had this little to say, they could at least have cut the film by twenty-something minutes. The surpriseless, uninspired dialogue, the nothing-exciting-here-either look and the thoroughly bad, tacked-on soundtrack don't help.
That said, there are a couple of scenes that are better than the whole, and the film-makers haven't any problems getting through the duration, so it's not as if this could make anybody suffer. They know they haven't "anything to add" and don't even pretend they do. Some don't and do, and that is a situation much worse than this.