This a modified version of The Tumbler from Joker's Ice Cream Surprise Lego set.
About this creation
This Side view shows the changes I made to the front, I felt the front wheel supports weren't wide enough, so I added two layers of Lego to bulk it out a bit.
From this view you can see the rear of the vehicle has had alot of work done to it, the wings at the back have been folded down, crome exhaust pipes have been added, the wheel base has been widened, a new hinge piece was added for the hidden weapon, and a booster was also added, but the missile launcher was removed.
With the hidden weapon I wasn't sure what I could do, so I added the twin cannons with a 360 degree rotation.
I was never really happy with how the roof opened, so after a few changes, the roof stays level and rotates up, it was the closest I could get it to the films.
This image just shows you Batman outside The Tumbler with the roof open.