While driving, hold R . Batman will blast out of the cockpit. Immediately hold Spacebar to glide. This is the fastest way to transition from road to rooftop in the game.
If you keep Ctrl default, you must bend your pinky awkwardly. Many competitive players swap Ctrl (Stun) with Spacebar (Jump), and move Jump to Mouse 4 . This keeps your fingers on home row (WASD). batman arkham knight keyboard controls
Are you having trouble with a like the Blade Dodge? While driving, hold R