The V12 engine that you see in the image to the left and the video below is the work of a Spanish engineer who goes by the name of Patelo. The working engine is the culmination of horas de trabajo, 1200 of them to be precise – he thinks that it is the world’s smallest working V12. The engine, which is powered by compressed air injection, has a total displacement of 12 cubic centimeters from 12 11.3 mm pistons. With the exception of the screws, Patelo built the whole thing from scratch – all 261 pieces of it...