![Smile :)](./images/smilies/icon_e_smile.gif)
I saw some threads talking a little about this kind of ideas, but never saw the idea of a roboport-wagon, which could be useful : you could have all your robots into it, your materials too. You stop your train not too far your actual construction site, and you only have to build one or two roboport to make the link between construction site and your train/robots/materials.
Pocket bots (mod) : https://forums.factorio.com/forum/vie ... =14&t=4441
Modular locomotive : https://forums.factorio.com/forum/vie ... 12&p=46644
Logistics wagons (mod) : https://forums.factorio.com/forum/vie ... =14&t=8491
Roboport vehicle : https://forums.factorio.com/forum/vie ... 204#p44204
Edit :
Some other links :
5dim's mod (includes a train portion, doing some things the same way I was suggesting) : https://forums.factorio.com/forum/vie ... =14&t=7733
Wagons: More train stuff (mod) (which is now included in the 5dim's mod) : https://forums.factorio.com/forum/vie ... =32&t=3926