I used to have a 1958 Chevy TRUCK that had the roundish (not triangular) vent wing windows that were wider at the top than at the bottom. The windshield wrapped around the sides.
I would have never gotten rid of it except that in Colorado at that time the commercial license plate and insurance just to legally drive it across the street cost as much or more than it was worth at the time. It had utility boxes, a huge PTO winch, and quick up/down A-frame that reached about 25' high.