Quest:Operation: World Domination
Level 7: Operation: World Domination
Build 200 trains & 200 busses having an operating profit
Not much to say about this quest. It might take a little time.
A tip to speed up your proces: Use <5 tile trains, preferably 3-4 tiles. This will alow you to spam more trains on the same tracks.
Grow some towns in the meantime with longer distance between them to spam busses