That looks terrible. The rear sags so much that the weight on the front drive wheels would be very light & maybe even dangerous. If you need more room then get a Sienna.
It needs the smoked Valenti SB taillights to match the black door Total Blizzard Pearl mismatch. They need to do a better job at it. The average American could tip that thing over just from stepping onto the door.
It's just an empty shell. Imagine the wheelie it would pull if just adding a galley and lav in the back. I think a motorhome would be a great application for a hybrid powertrain if it spends more days on the road rather than parked.
A friend of mine in KC designed this 'personal parasol' for his Smart Car. Received a couple awards and was in several publications. Designed to attach to a trailer hitch and allow him to find shade wherever he is. I know, trailer hitch and Smart Car just doesn't sound right... LOL