Bought Nov/Dec 2015 S Gaugian magazine. Nice review on pages 12-13 of AF FlyerChief Polar Express set. Was unaware of its shortcomings when run in conventional mode. Nice to know this but am curious as to why O gauge Chiefs and Chief Pluses run respectably in conventional mode while the S gauge version apparently doesn't do as well. (There have been numerous reviews on this forum and the two major O gauge magazines touting the performance of Chief and Chief Plus engines in conventional mode as compared to conventional only locos. While of not to the specs of their remote controlled brethren's performance they never the less held their own in such areas as slow speed operation and smoking compared to their purely conventional locomotives!
Finally when Matt Ashba was asked by the review's author "...if the AF olar Express was a one-shot production production item or would it be a continuing production set like it has been in O gauge and G gauge. His feeling was that if customer demand warranted continued production, he felt Lionel would do so..." So I personally hope that despite S gauge being a considerably small portion of the already small niche market which model railroading already is that demand for this set will continue strong in the future because if that doesn't happen I'd guess it'd then be highly unlikely any additional cars will be made in future years\, the way they've been made for the sibling O gauge set.
Many thanks to the review's author.