If the person doing the gating is being a tool, I do this...
Make sure my driver's window is down.
Open up my can of Coke.
Move to the right margin of my lane (Mr. Tool will start to move left, trust me!).
Hang my Coke out the window, about door handle height.
Allow the airflow to gently lift the Coke out of the can, in a thin ribbon-spray, all down the side of Mr. Tool's car.
If he doesn't back off immediately, pour a little faster and higher. Either he'll get the picture, or he'll need new paint soon...
It works almost as well as dropping a handful of roofing nails out your window!![]()
If you've done that and gotten away with it, I have to wonder what part of Houston you've done it it in...if you tried that on 610 I'm afraid what the other car would do in retaliation.