Evening, posting on behalf of my sister how has started making some custom mugs.
https://www.etsy.com..._active_1&crt=1
Hope the link works - she hand draws the front and back of the car, customised and individual. She did the one in the photo for my birthday and thought it was a good idea to sell them.
Thought I would share as I was really pleased with this as a gift and it's something different and unique.