Yeah, I dunno about this.
 

<iframe width="560" height="315" src="https://www.youtube.com/embed/5htPQoEAK2U" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>

Hmmmm..,

What happens if you go too far?

I have one of these, pretty handy actually.. a lot quicker than dragging out a jack to change a flat on a trailer etc.. If you over drive it all that happens is wheel lands back on the ground and the thing falls over.. Still need jackstands for more involved work.

https://images-na.ssl-images-amazon....1Q7FSwAbTL.jpg

Don’t have to worry about gas tanks on a trailer. I think that’s cool as hell, I might grab one to keep in my truck when I tow my boat.

It looks to only work on a solid axle, which would limit it to pickups, Jeeps, and old school SUVs.

Yeah, might be too tall for your Jetta.

I may look at getting one for my 30' camper...put a block of wood under it so it doesn't sink into the ground, and slowly roll it forward to elevate. It would save havng to carry a heavy jack.

If you have a 2 axle trailer you can drive up on a couple of 2 x 4's under one tire and raise the other tire off the ground. BTDT.

Looks handy for a trailer. I've done as Paul said, problem with a 2 axle trailer is sometimes a road hazard wipes out both tires.....BTDT . Then I'm not sure the axle jack would work.

I think the driving up on plank trick only works on trailers with Dexter torsion axles.. With leaf springs the other wheel stays on the ground...Had to change a shackle on a tripe axle leaf spring trailer recently when we jacked the axle with the cracked shackle to remove the leaf spring, the other two axles drooped was being raised