I just saw these trains on eBay. Another "Thomas" like franchise? Are they HO or OO and are they compatible with US standards? I looked in the Thomas forum here and don't see any mention of these. Here are some links I searched up:
http://cgi.ebay.com/BRANCHLINE-UE205-Circle-Trailer-Car-MINT-IN-BOX_W0QQitemZ390121568295QQcmdZViewItemQQptZModel_RR_Trains?hash=item5ad50eb827
http://models11.net/cart/index.php?main_page=index&manufacturers_id=9&sort=1a&filter_id=129&alpha_filter_id=0
http://www.undergroundernie.com/
http://cgi.ebay.com/BRANCHLINE-UE205-Circle-Trailer-Car-MINT-IN-BOX_W0QQitemZ390121568295QQcmdZViewItemQQptZModel_RR_Trains?hash=item5ad50eb827
http://models11.net/cart/index.php?main_page=index&manufacturers_id=9&sort=1a&filter_id=129&alpha_filter_id=0
http://www.undergroundernie.com/