The internal combustion engine is one of the greatest inventions in recent human history. When Karl Benz mated a two-stroke gasoline engine to his Benz Patent Motorwagen (the very first car) in 1885, a technological revolution was born. Thanks to a clever YouTuber, now you can see how internal combustion really works - he installed a see-through glass head on a Briggs and Stratton engine. Simply click on the wheel located at the bottom right of the video player, then QUALITY, to change the settings and witness this spectacle in stunning 4K. Enjoy!