Looking good there Sun, while I think of it, have you got any PlaRail Advance? I hear 'rumours' that they will run on 'N' gauge track as well as the blue track, I've been meaning to try it out but at the moment don't have any 'N' track to hand. If you got an 'advance' could you try it out and let me know?
The next thing you should look at is the Tomytec Moving Bus system, you could then integrate that into the layout. If you not seen it check it out, absoultely brilliantly detailed little 'N' gauge buses which are motorised (2 x LR44) that run autonomously on special road without grooves/slots in it. They can even be made to speed up and slow down by placing small magnets under the roadway and you can get 'bus stops' which they will pull into automatically and either stay put till you push a button or alternatively will pause then take off again all on their own - again controlled by magnets.
You can also use the motors in most of the buses that Tomy make in that scale so its easy to find ones that suit including some older styles that would fit in with Thomas
The next thing you should look at is the Tomytec Moving Bus system, you could then integrate that into the layout. If you not seen it check it out, absoultely brilliantly detailed little 'N' gauge buses which are motorised (2 x LR44) that run autonomously on special road without grooves/slots in it. They can even be made to speed up and slow down by placing small magnets under the roadway and you can get 'bus stops' which they will pull into automatically and either stay put till you push a button or alternatively will pause then take off again all on their own - again controlled by magnets.
You can also use the motors in most of the buses that Tomy make in that scale so its easy to find ones that suit including some older styles that would fit in with Thomas
Happily collecting things all my life... 
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