Actually, do not be too impressed. The concept is clever, but not too difficult.

First, all they do is draw simple objects. No problem with this. Can be done
with Flash. Just keep track of the points. Then they send the information to
Working Model. I have used that problem for over 15 years. I was one of the
first to use it in engineering and even got a license to include it with all my
CDs for Dynamics.

Now, draw the object with some markings, send the data as a simple text file to
Working model and run. It would be much easier just to do it in working model
directly.

There is a very big problem with drawing engineering objects, they are not
precise. We need high accuracy or weird things happen.

We can talk more, but it really is not that impressive. The idea to like drawing
with Work Model is interesting and clever. Remember, they did not do any
mechanical simulation programming, just used Working Model.