Each time a town pulls down a building of 1x1, a square of 2x2 is cleared also. (I've included a picture to illustrate this) Roads next to the building were removed also, stucking my vehicles.
I've roughly searched the history here and see that no people had raised such question before... so I really suspect that it's my own problem, but I just can't figure out what to do. Any help is greatly appreciated.

I also like to take this chance to say a sincere word of thanks to the patchmakers for their effort on this game, especially when most people are turning to locomotion.
