A friend told me this evening that he has a Lionel HO Polar Express that he controls with an app on his smart phone. I haven't seen it yet but would it be possible to run that engine on a DCC railroad?
ChuckAllen, TX
Hope this helps you decide!
http://www.lionel.com/articles/NewsStand-Lionel-Announces-The-Polar-Express-in-HO-Scale/
Neal
There are a couple of YouTube reviews on the Lionel HO Polar Express showing them using it with DCC.