Just do what I do..
Freeze a brick of piss in a 4x9 bread pan. Cut them off, get out of the car... Rip the door off their car and haul them out. Beat their face in with the frozen brick of piss. Toss it in their lap while they're sprawled senseless in the street. By the time the cops come, the brick thaws to melted piss. It looks like they pissed themselves. You can tell the cops you rescued them from their car during a fit of rage, which you accidentally caused by cutting them off, and you're very sorry about that. And when they recover consciousness, they won't admit to be being beaten with a brick of frozen piss.
Everybody wins. Well, not everybody -- but everybody that counts.