A big problem with this game lies with the way they force you to subscribe with a monthly fee to enable the use of road based passenger transport. If you subscribe and use it, then cancel, it is taken away from you.
Saying that, it is possible to pay £11.95 for a 3 month subscription, which in terms of an "MMO" would be ok, except this really cannot be described as such. The ability to trade resources with other players is pretty much as far as it goes - oh, unless you include the chat box :S
As for the game itself, it is a good attempt at creating a City Builder, but falls short in many areas and unless you are very hardcore, you may get bored easily with the "grid" nature of the game, and the nasty bugs it still has to iron out quickly if they want people to stay online with it after the free 7 days.