Moving the movers forward

So I was thinking about the mover, and I decided to make it simpler and more sophisticated; so there's these two bokses, shaped with a little more effort..so the lower box will keep it's rotation because of the appendage and the upper box will have these "pads" for rails.. should be a LOT better than earlier version.

But you know how it works; you make a plan, and when you're actually carrying it out, you'll get better ideas.

ps I also like these "movers" because they remember me of "mowing", which is my greatest joy in summer.

 

(not my photo, found in internet)