The future of the towcar (crystal ball gazing)

There's much discussion on CT regarding the demise of the internal combustion engine and the impact on our hobby.  What would an ideal future look like and could it happen?

There's no doubt that the electric car driven by batteries or fuel cells will become more efficient and cost effective. Will we need a large towcar in the future? Maybe not. What if the same technology used for electric cars is applied to leisure vehicles? A caravan could have a large built in battery both for powering the caravan systems and maybe for providing tractive effort through driven wheels. This would both extend range and reduce the size of electric towcar needed .Maybe there will be a leisure vehicle that is a bridge between caravans and motorhomes. A personal transport towing module integrated fifth wheel style to a camper module, possibly a roof height articulated connection towards the centre of the tow module wheelbase for stability.  Automated detachment and self leveling, water and waste tanks as current motorhomes. 6 or 8 wheels all driven. It could be possible to have power sharing between the batteries in each module so when you go shopping hookup, to  a fast charger then return and top up the camper module thus enabling off grid combined with extensive rooftop solar panels of course.

Just a thought.