Can anyone please help me to identify the car in this image. The photo is of my grandfather who was a driver as his profession so it is probably from the 1920's or 30's. I've searched the internet, used Google Lens, etc... but to no avail. The photo was taken in New York City. The clues I tried to match were: 1) the slanted engine air grills on the side of the car, 2) The sloped front glass, and 3) the shape of the rear side window. Thank you in advance to anyone who might be able to help.