[paul8488]

That's a very stupid jack design. If it's meant to jack a vehicle, even if it's a rare occurence, it should be deigned to do so safely. It wouldn't take much to add a partly rounded or V shape to better sit under the axle, and that would make all the difference.

 

[paul8488]

Working under any emergency jack like this without supports is stupid, but I still think that this design could easily have been made better with a deeper cup or V design. I see from the picture that it isn't just flat, which is better than nothing, but for the random person who is going to jack their vehicle up on the side of the road once every decade, it wouldn't have been hard to make something more foolproof.