So we decided to bring the train set down into the play room so it would be more accessible to the kids.  It seems to run better on hard surfaces vs. carpet.  We actually decided to set it up on the old train table.  The kids have been using it, now that it works better.  There is a video of Olivia driving it....watch her face at the end.

See a few pictures and a video of Conductor Olivia. 

A few pictures of Isaac when he got this train set.

Isaac's First Train Table