Tailgaiting

[Zero_PSI]

So I'm sure everybody is sick of it. It happens to me so often these days that even people I know are doing it.

Perfect example. Last night on the way home a guy I work with and actually call "mate" was sat about 3 feet from my back bumper the entire way home. I drive down express ways so this is a 90kph zone then a 110kph zone. If I had to emergency brake for some reason we probably would've both been dead.

How do I approach this guy about it. And what do you guys do when randoms tailgait you?