Daniel Norée (creator of benchy) danielnoree.com designed an RC car based off F1 car in Fusion360 and 3D printed it! And to top that it’s open source and continuously being improved. Daniel has a great answer for “what can you do with a 3D printer” and I look forward to everything else he comes up with. Check out the video of one of his cars in action.
OpenRC F1 3D printed RC car
CAD Monkey Army 