As of now, Industry 4.0 market got its highest attention among the global player across the world, and internationally it has been recognized as a powerful transformation in the industrial world of automation.
As per a survey by VDE, in 2016, below shows the top 10 sectors with high business potential,

In my opinion, electromobility and smart traffic or smart cars are the future and the new world of transportation. Smart grids also got more attention from the markets with the internet of things and Robotics being used as helping support to modernized the communication and also the delivery purpose. More emphasis is on using smart transportation or travelling.