My, what a friendly looking vehicle.
As far back as Arkham Asylum, one of the biggest fan requests has been a drivable Batmobile. I can certainly understand the desire; the Batmobile is one of the most iconic fictional vehicles out there. However, I never really missed it. Batman is plenty mobile on his own, and if I'm being honest, I actually felt a bit hesitant when I heard it would finally be included in the upcoming Arkham Knight.
While I trust that Rocksteady knows what they're doing with Batman after Asylum and City, I suppose I worried about this being a case of something being shoehorned in just because they felt they had to. After seeing the new Batmobile gameplay trailer from E3 2014 however, it looks like the famous vehicle has been incorporated quite nicely: