There doesn't seem to be a practical reason for it to look the way it does, so I doubt it looks that way because it's more practical. For one, the roofs angle is counter-intuitive if you intend to put a roof rack or other kinds of utility racks over the roof or roof and tray. The rear tray also has sides that go up to the roof. How are you supposed to put stuff in and out from the side of the tray? That's a pretty common use case, ignored for aesthetics. If the panels are aluminium, it's going to get roughed up pretty quickly in the tray sides and top parts as well.

The rear tray is also looks smaller than the renderings make it out to be. They have a quad in one picture that takes up the full length and then a sleeping fitout in another that also takes up the full length, either it's a really long quad or they are really short people.

I'm sure this will become more fleshed out over time, I doubt this is the final specification for the car.

I can't wait to see all the different renderings people come out with, to show potential aftermarket parts for this thing. I think that will be the real display of whether or not it will make for a good utility vehicle. I can imagine this looking extremely purposeful and rugged with the right equipment on it.