Somebody should give this a web frontend! Let me submit a git or mercurial url, publish an image for it for all to see.

Wow, super cool. My first thought went to back in the day there were all those addons for SimCity like SimCar or SimHelicopter. Where you got to drive/fly around, respectively in your actual SimCity loaded in from a save file.

had to:

"Lex: It's a UNIX system! I know this!"

[1] http://www.imdb.com/title/tt0107290/quotes

This sounds really cool. The last release was back in 2009. Has it been worked on since then?

This is now integrated in Pharo.

http://pharo.org/