Was this sled design ever made?

So there I was… told to leave the shop and go to bed. I was laying there and thinking about my dear Maisy Maslow while scrolling through a 783 post topic on sled linkage design. I tear rolled down my cheek missing her so.

Then I came across this. Did anyone ever build/experiment with it? It looks cool.

@awlinc

not that I know of.