[stanko]

There is a related project which I used several times:

https://github.com/anvaka/city-roads

Edit: it outputs SVGs and you can try it online. Anvaka (author) has other really cool dataviz projects.

[sandos]

Kinda sad that maptoposter uses png. SVG is so much better in this case, if you want to actually print a poster!

[PetahNZ]

It does support SVG, --format=svg