Remember this incredibly effective demo that we showed you last year?
In just seconds and using no words, the presenter makes the viewer clearly understand how to, and how not to, distribute the weight on a towed trailer.
Sadly, here's a real-life demonstration, without the hand to reach in and stop it:
"Dad and his two kids were ok," writes the trucker who posted the video. "Gives you a good idea of how long it takes to slow down a heavy laden truck going 65mph."