Yes sir, researchers at the Vienna University of Technology have ventured into unfamiliar territory, perfecting the art of printing 3D objects at the nanoscale. This nano 3D printer of theirs is capable of creating complex objects which are no larger than a grain of sand. Never mind being at that size, they are still depicted in great amount of detail, and apart from the racecar, there are other examples including the St. Stephen’s Cathedral in Vienna, in addition to the Tower Bridge in London. This is made possible thanks to two-photon lithography, where four minutes will yield 100 layers that comprise of 200 lines for each layer.