ORNL 3D printed a Shelby Cobra that a long string of Secretaries of Energy have had their picture taken in, and you can see a Willys Jeep they 3D printed in the American Museum of Science and Energy in Oak Ridge.
Qualifying 3D-printed nuclear materials accelerates reactor innovation
https://www.ornl.gov/news/qualifying-3d-printed-nuclear-materials-accelerates-reactor-innovation