Watching smart people solve problems with their hands is always fun, particularly when you can't figure out what the hell they're doing in the beginning. Here we see a bunch of people traveling through the desert. One of their vehicles becomes bogged down, in fine sand that appears to be the consistency of flour.
This obviously isn't their first rodeo, as they've brought all of the equipment needed to free them: A shovel, rope, webbing, and…an empty sack? Watch and learn how to essentially fight sand with sand:
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Cool! I found the mud version too - https://www.youtube.com/watch?v=ZUUckU-vAqI
It's a function of the poor tires not meant for sand and that they likely have open differentials. On soft ground you need much wider tires - less PSI to the ground the same way a farm tractor does. Lock the axle and both tires will turn at the same rate regardless of slippage.
a quick googling indicates that differential locks are optional on Land Cruisers (at least some models). Imagine spending $100K on a "4WD" and finding that it's actually one wheel drive exactly when you need four!
Nice trick. I've never had a Land Cruiser, but awfully surprised a $100k 4WD vehicle is completely disabled merely by one wheel in a small sand hole.