In 'Watch Dogs 2', the best way to maximize your gameplay is to get the following Research App Abilities. Although these abilities are not that easy to acquire as you will need research points and key data to unlock all but the results are very rewarding. Research points can be earned via completed quests or hidden in Bay area while key data is found in each part of the town.
Vehicle Direction Hack in 'Watch Dogs 2'
This ability allows you to hack any vehicle, whether you are driving it or not, and control it to go in any direction you want. It's the best use when you need to create a distraction so people do not notice you or simply just for the fun of it. You can move absolutely move any vehicle out of your way or even control the car of an innocent civilian.
Engine Override Hack in 'Watch Dogs 2'
There will always be a time when you badly need an extra burst of speed as you complete missions or just for the fun of it. That is exactly what Engine Override has in store for you. It's the best method to use when you need to be from one place to another and there is no other faster way available. It also gives you a big advantage in selected missions like Motocross races. Best of all you don't need to slow down on ramps regardless of your speed with this hack.
Create Distraction Hack in 'Watch Dogs 2'
This is probably the best from all hacks in the game. The Create Distraction hack allows you to make any civilian or enemy be busy with something else all of a sudden. Giving you the opportunity to do what you need to do, regardless if its good, bad or worse, no one will interfere because they are too distracted. When you use this hack, all the chosen people will suddenly use their phone, enemies could be immobilized and a lot more.