Running is something it clearly hasn't done for at least a few decades.
And it has no door or floor or glass for that matter, so even with baited breath would no longer function as a fish trap.
On a more usefull note: I just gave up on repairing deep gouges on my Allcars Snuggy windshield glass- as all my research shows that it cannot be accomplished without significantly damaging optical quality.
Clear fillers will not work on a gouge either.
However seeing that it is a flat glass, I found a local shop the said that they could cut me a new one for about $180.
The price was based on its size, so flat glass for an Isetta should be really cheap. Probably best to make a card board pattern for them to copy, and end up with crystal clear unscratched panes.