Back to Morelli, and maybe it was already posted in this forum years ago, it's quite interesting to think about this "Morelli bike for 4 people" :
The Recumbent Bicycle and Human Powered Vehicle Information Center
I wonder if the drag coefficient it's better than Aptera o Solarworld No.1
The problem is that the fixed wheel streamlined covers, probably don't allow much wheel moviment to the sides.
Maybe a Aptera car like, similar, could fit 4 people, if had in wheel electric motor, solar panels.
And batteries somehwere else I can't figure yet... ;-)
Canned sardine mobile in a Morelli shape.