Licensing (sign off) procedure for car illustration.
I wish to contribute an illustration of a classic style Hot-Rod car with flames down the side. The image was manually traced over a photo from a photographer with permission. I even gained permission from the car owner via social media. If I wanted to upload this illustration to Adobe Stock, would I need to get a sign off form from the photographer, the car owner or even from Ford who originally made the car in the 1930's.
Gratefully.
