Adds 2 tiers Mining Drills, Solar Panel, and Accumulators that are costly but powerful and also lets you upgrade beginning machines to the late game machines.
Pretty explicit, I noticed that locomotive MK2 (and wagons mk2) are not shown on map, and then looked for every solar MK2, pump, etc doesn't have icon on map
It's just anoying for trains ^^ not knowing where they are :/