Excuse Me, But This Mixes Too Many Ideas Together

I'm looking for an electric fireplace (one of those things that looks like a fireplace, but is really an electric heater with a pretty clever simulation of a wood fire) for the master bedroom.  The last one we bought at Home Depot.  But among the varieties of such things I found this has to be among the oddball collections of attributes:



Yes--a rolling fireplace!  If only medieval Europe had enjoyed the benefits of these!