After visiting Walmart headquarters in Bentonville, Arkansas in May of 2017 I took a nice scenic road over to northeast Oklahoma (not very far away) and the little town of Afton. There I found a Custom Car Museum and Hall of Fame out in the country next to the home of Darryl Starbird. Now 85 years old, Mr. Starbird was one of the most popular custom car designers of his time. As you can see in the photos below his works vary from classic hot rods to futuristic designs and variations on regular car and truck designs.
If you like what you see you can find lots more photos online. This only a small portion of the photos I took while going through the museum. Most of these are his work, although this was also a Hall of Fame so there may be works of other people.