On a whim, I checked out Powerhouse Coach. Now I know that barring a large lottery win I'll never own one of these. but they've got two pretty wild additional features
First, for the average (avg? those who afford these coaches aren't 'average' by any means I know of) coach driver who doesn't want to learn to back up his trailer, a self propelled trailer!
self propelled trailer & lateral drive coach
I thought that was pretty neat, then I clicked on the 'lateral drive' coach... they use the same hydraulics system to move the rear end of the coach in tight quarters.
the ex Trucker in me says 'no fair, that's cheating', but the geek in me thinks it is a pretty neat system.