CCTV security footage reportedly out of Brazil shows swift street justice as a motorist witnesses an armed mugging and uses his vehicle to neutralize the criminal.

The video begins as a pizza delivery guy gets on his motorcycle after completing a drop. A waiting low-life street thug decides the $20 is worth threatening someone's life over and pedals his bike up to his would-be victim.

He demands the money as he incompetently fishes around in his pants for the weapon. The pizza guy isn't sure if the man has a gun or how seriously he is about using it, so he decides speeding off isn't worth getting shot in the back over.

In the background, a motorist comes to a stop because the mugger is now blocking his lane. He watches the incident unfold, and as soon as the criminal produces the weapon, a large-bladed knife, the motorist punches the accelerator, pummeling the dirtbag. Who else loves stories with happy endings?