Track and Motorised Thomas Mini's?

Having recently got hold of some new batches of mini's as you all know, even though I'm not actively getting back into collecting these.  My mind was pondering the other night if anyone has actually motorised a Thomas Mini?  Well it appears not based on my google searches to date, but I'm thinking of having a crack at it.  You can get miniature motors, gears and stuff that should fit in the body of a mini, however I don't see how you could get batteries in there also.  But it occurred to me maybe you could put some button cells in one of the carriages or wagons and have wiring going to the mini loco, fit it with a miniature plug/socket and you could also get away from having a switch as well.  This is something I'm continuing to look into and if I can find suitable components I'll have a go and let you know how I get on.

Then of course the next challenge is track, is there any out there already that you could use?  Of course 3D printing track is possible, but it means designing it, printing it in quantity and at the moment I've got 2 lovely little kittens who are so curious using a 3D printer is almost out of the question as they tend to climb all over them even when they are idle, once moving they would be too much of a temptation for the little darlings and I'd hate them to get squished by the platten which moves or burnt by the melted plastic and the hot end (yes they would likely try to catch it as it moves).  So I hoped that the would be something out there.

Well on this front I've been a bit more successful as it seems that 'Power Trains' track is pretty much a perfect gauge for Thomas mini's as shown in this video, what's more it even looks pretty realistic as track for these little trains.  So if I can motorise some I could have a genuine Thomas Mini's train set lol!