It's always good to see some idiot with ROAD RAGE get hit with swift, instant justice.  And that's exactly what happened to 18-year-old Nicholas Richer of Manchester, New Hampshire on Monday.

Nicholas was driving up to a tollbooth when either he cut off another driver, or another driver cut him off who started it isn't clear yet.  What IS clear is that they started yelling at each other, and Nicholas pulled out a GUN.

It was a flare gun, but the other driver didn't know that.  And Nicholas pointed it at him.  As Nicholas waved the gun around, he accidentally FIRED IT inside his own car.  The flare hit his passenger seat and it CAUGHT ON FIRE.

He pulled off to a gas station to put out the fire.  When the cops got there, they saw him trying to hide the flare gun in some bushes.

Nicholas is now facing TWO felony charges of reckless conduct and criminal threatening, and could get several YEARS in prison.