Thanks. No disrespect intended.
The site has been repaired so here's the picture I couldn't access:
The design is lifted from an art deco locomotive. It's a Jaray two-body approach, just slid to the front. The sketch is rough, but it it keyed to the Type II's external door hinge line. Holding the width through the front allows front skirts without narrowing the front track.
The lower square front edges induce vortexes that re-adhere the airflow. Elon Musk stole the idea for his CyberTruck.
The dividing line is just painted from the back of the doors to the boat tail. A boat tail might not be fit for your use case. You could use doors the hinge on the side instead of the back so they can open 270°. They could be thick enough to hold shelves or be a box cavity.
The old Citroen vans had three-piece gates. The top hinged up, then there was a split-gate lower.