Another Idea...

Our second idea is about three guys who rob a bank. After robbing the bank, we see the bags of money being split up between them and they go their separate ways. 

We see their ordinary lives of picking their children up from school which through dramatic irony unsettles the audience as they know the mens dark secrets. We also feel sympathy for the children because they aren't aware of their fathers activities. 

The three meet up outside some woods and nod at each other as if to acknowledge their achievements. As two of the men drive off, one stays behind and gets out of his car. He opens the boot to show the audience that he has in fact kept all of the money for himself, therefore the audience are concerned about the objects in the other mens cars. 

We then get a split screen showing the bombs that were switched into the bags and then the cars both blow up.