The story behind the bat-pod flip up the wall:
EXT. CHICAGO STREETS - NIGHT
Chris Nolan, Christian Bale (as Batman), and the crew are finishing filming the batpod/Joker truck chase scene.
CHRIS NOLAN: Okay, guys, we're almost done. We just need to film the part where The bat-pod heads in the direction of The Joker.
CREW MEMBER: Sounds good.
CHRIS NOLAN: Is there a bathroom near by?
CREW MEMBER: Oh, yeah. (points) Just there in that coffee shop.
CHRIS NOLAN: Thanks. I'll be back in a minute. Then we can finish up the scene.
The crew hangs around, waiting for Nolan to return. A few minutes later.... Joel Schumacher (in waist coat and blazer), disguised as Chris Nolan, makes his way to the set. The crew members can't tell.
JOEL SCHUMACHER (in bad English accent): Oh, cheerio, lads! Now, where are we?
CREW MEMBER: The bat-pod heads for the Joker, remember?
JOEL CHUMACHER: Oh! Right-eeo!
Joel looks at the bat-pod - his eyes trail from the pod.....to a wall.
JOEL SCHUMACHER: OH, I have a smashing idea!!! Let's have this so called bat-pod climb up the wall, do a 180, and land back down. And then have it head for the Joker! It will be sexy, provocative, and completely illogical!
The crew members looked puzzled.
CREW MEMBER: (Under his breath) That's the dumbest ****ing thing i've ever heard.
JOEL SCHUMACHER: What was that?
CREW MEMBER: Nothing...
JOEL SCHUMACHER: You'll do what i say! I'm Christopher Nolan!
The crew members go ahead and create one of the dumbest, most illogical scenes in cinema history.
INT. COFFEE SHOP - NIGHT (MOMENTS LATER)
A crew member opens a stall to take a piss - he finds Chris Nolan, passed out, beaten, bound, gagged, and missing his waist coat and blazer on the floor of the bathroom.
DISSOLVE TO:
Joel Schumacher's face staring, laughing into the camera.
END.