Has the problem with gear sets been corrected for the Rail Bus. Plan to add one to my layout.

I want to remove the motor from one of my street cars to convert it to a trailer for use on an oval. Is there any snags I am going to run in to. Also will the other street car be powerful enough to pull a trailer

I have two Bachmann reversing trolleys in a village setting & would like to run one on a regular closed loop. Is there any changes that I would have to make & can I use a standard transformer /controller to run it.

I have ON30 Christmas trolleys that I wouldlike to use on regular HO track . My question is can I use these trolleys with an ordinary transformer and would I have to do any thing to make these trolleys run in a looped track