How Cool Is This?

How does this work? I imagine that it's done with a servo?



This one is from the same guy's channel and has some serious articulation in the steering:

 

That is pretty cool people will do that on there 1/1 with a winch mounted on axles and hooked to chassis so that you can lower your cog while crawling

 

Do you think he's using a winch on this crawler to get the chassis to bend?

 

In second video looks like he has winch mounted to lower chassis and servo to turn chassis instead of havin steering on axle he has chassis on pivot for tighter turns so the whole axle turns instead if just steering knuckles

 

Somewhere I saw this chassis, or one like it, where the guys raises and lowers the chassis in different situations. He raised it when he crested a rock where the chassis was hanging up in the middle and so the tires weren't getting any grip. Very cool.