I'm thinking of something like the car or the tank, perhaps with a larger footprint and fuel consumption, together with a larger inventory (like a truck), which you can drive around and lay brick/concrete tiles. The large inventory is required for storing all of the bricks/concrete slabs, and for putting back cut down trees (although you can place tiles under trees, you don't want your road to be covered by trees!).
This will also allow you to lay roads faster, as this machine will have faster movement speed than normal walking.
Some nice-to-have features:
- Control road size / diameter.
- Place big/medium poles with/without lamps
Of course, it would have to be much faster
?
!