Junxions is a traffic engineering sim where you can finally fix that junction near your house

There's also a sandbox mode, for freeform experimentation, and perhaps most interestingly the ability to enter real world coordinates and generate a map based on a real world location. If you want to generate a map based on your hometown, and fix that forever-clogged junction on your commute to work, you can do so.

Okay, now you caught my attention.