Hold on tight: the Fourth Industrial Revolution (also referred to as "Industry 4.0" by those in the know) is officially upon us.

Super-exciting technological advances are coming in thick and fast at the moment, including everything from electric and driverless cars to artificial intelligence and virtual reality.

With innovations rolling out at warp speed and the competition hotting up across a number of key emerging industries, read on to discover which trailblazing companies are winning the race to rule the future. All dollar amounts in US dollars.